Cumulative Gas Mileage (Gas MPG) Thread
12-03-2006, 10:47 PM
#601
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YES. I went from 22 or so for freeway driving down to about 19.5 or so. I'm going to go to the dealer- the car also now stumbles. I'm wondering if there's a bad plug in there.
01-19-2007, 02:57 PM
#602
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I have just gotten the recall flash so I updated my spreadsheet and came up with the following MPG numbers until this point:
July 2003 Port Flash - 6,567 miles 14.9 MPG
M Flash - 8,375 miles 16.4 MPG
R Flash - 6,955 miles 16.5 MPG
I do mostly in-town driving and I drive in a spirited fashion. My car is totally stock.
July 2003 Port Flash - 6,567 miles 14.9 MPG
M Flash - 8,375 miles 16.4 MPG
R Flash - 6,955 miles 16.5 MPG
I do mostly in-town driving and I drive in a spirited fashion. My car is totally stock.
Last edited by msrecant; 01-19-2007 at 03:01 PM.
02-21-2007, 09:10 PM
#603
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I think i got a defective RX8. Just bought an automatic 2 months ago and i fill the tank with exactly 15 gallons of gas but i am getting a maximum of 180-190 miles. Its unherd of. I was so pissed i took it back to the dealer ship and they just flashed it. I don't think it has made a difference and i am thinking of invoking the lemon law and asking them to replace the car and maybe try and get a manual one instead. I am not sure, i dont think they will do much to fix this car. I do like it though. I just wish it worked properly. Has anyone got any suggestions, the car has total 1800 miles on it and i got it with 800 miles on it.
02-22-2007, 09:41 AM
#604
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Not sure if this is pure coincidence, but my mileage dropped about 1-2 after the flash (was @18-20mpg), but when I tried the brake 20 times pump reset, it appears to be back to what I was normally getting. I've been keeping tabs on the mpg for about 6 weeks now..so..am pretty confident that that might work. Basically, turn on the your car (not start it) to pre-ignition, pump the brake pedal 20 times before 10 seconds(?), you'll see your oil gauge drop, then turn your car off, then back on and ignite your car. I think this procedure reset your car's to learn mode or something..anybody with better details, please input 
As for the auto vs. manual Nemesis..go back and tell them you want to change it to the manual..auto is not as fun as the manual..whether you can do it without paying a minor fee..
As for the auto vs. manual Nemesis..go back and tell them you want to change it to the manual..auto is not as fun as the manual..whether you can do it without paying a minor fee..
02-24-2007, 07:36 PM
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Gas Mileage Reduction After Recall Re-Flash
Originally Posted by jdos2
YES. I went from 22 or so for freeway driving down to about 19.5 or so. I'm going to go to the dealer- the car also now stumbles. I'm wondering if there's a bad plug in there.
02-27-2007, 08:07 AM
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thanks icyur2. I wil try that but i will definately talk to the guy, infact give him a call right now and ask him what the deal is with this car and what he needs to do to replace it.
04-20-2007, 03:18 PM
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Finally I managed to get the gas mileage below 10l/100km.
It was 9.63L/100km (24.43MPG). 20% City/80% Highway
How to get this mileage:
Talk with a self phone while driving, then you'll barely exceed 95km/h (60MPH) and in city drive faster [minimum 65km/h (42MPH)] so you can always drive in sixth gear.
Car has 50000km (30000 miles) on it.
It was quite a pleasure to see that tripmeter shows 540km (337miles) before the yellow light came on
It was 9.63L/100km (24.43MPG). 20% City/80% Highway
How to get this mileage:
Talk with a self phone while driving, then you'll barely exceed 95km/h (60MPH) and in city drive faster [minimum 65km/h (42MPH)] so you can always drive in sixth gear.
Car has 50000km (30000 miles) on it.
It was quite a pleasure to see that tripmeter shows 540km (337miles) before the yellow light came on
04-30-2007, 03:13 PM
#608
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Haven't checked the mileage for a while. Drove from Indy to Chicago and back this weekend, about 450 miles round trip. Averaged about 80mph on the highway with some speeds a bit higher. Got 19.75mpg. I have 46,000 miles on the 8 now.
04-30-2007, 09:20 PM
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9.63L/100km? That's Amazing!!
I have been logging for over 60K now, and have yet to break 10L/100km.
My record is over 29L/100km - lots of beeps! I've seen posts of 33L/100km!
Best is 10.4L/100km
Average 13.96L/100km over 61,293km
16.85 mpg (US gallon)
Not going to win any green awards.
How a 3000lb car with 180hp at the wheels gets such pathetic economy must be a function of how rich the renesis really runs - pipes are carbon black after 100km.
There is no reason this car should not get 9L/100km on the hwy, and around 11L/100km mixed.
I have been logging for over 60K now, and have yet to break 10L/100km.
My record is over 29L/100km - lots of beeps! I've seen posts of 33L/100km!
Best is 10.4L/100km
Average 13.96L/100km over 61,293km
16.85 mpg (US gallon)
Not going to win any green awards.
How a 3000lb car with 180hp at the wheels gets such pathetic economy must be a function of how rich the renesis really runs - pipes are carbon black after 100km.
There is no reason this car should not get 9L/100km on the hwy, and around 11L/100km mixed.
Last edited by Rotator; 05-03-2007 at 04:55 PM.
05-08-2007, 02:14 PM
#610
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9.63L/100km? That's Amazing!!
I have been logging for over 60K now, and have yet to break 10L/100km.
My record is over 29L/100km - lots of beeps! I've seen posts of 33L/100km!
Best is 10.4L/100km
Average 13.96L/100km over 61,293km
16.85 mpg (US gallon)
Not going to win any green awards.
How a 3000lb car with 180hp at the wheels gets such pathetic economy must be a function of how rich the renesis really runs - pipes are carbon black after 100km.
There is no reason this car should not get 9L/100km on the hwy, and around 11L/100km mixed.
I have been logging for over 60K now, and have yet to break 10L/100km.
My record is over 29L/100km - lots of beeps! I've seen posts of 33L/100km!
Best is 10.4L/100km
Average 13.96L/100km over 61,293km
16.85 mpg (US gallon)
Not going to win any green awards.
How a 3000lb car with 180hp at the wheels gets such pathetic economy must be a function of how rich the renesis really runs - pipes are carbon black after 100km.
There is no reason this car should not get 9L/100km on the hwy, and around 11L/100km mixed.
9.63 was accomplished with winter tires, and I got nearly the same mileage (10.1L/100km) with summer tires a week ago, but my average speed was 110 instead of 90.
When I had my winter tires, my mileage at the 110km/h was never below 11L/100km, it was more like 12L/100km.
05-12-2007, 12:48 PM
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hey guys i got an 04 rx-8 with about 23000km/14200miles on it.
I am getting 265km/165m on easy driving per tank
and 240km/150m on hard driving per tank
My dealer does not deal with rx-8's very often and my car is still warrantied, what should i be asking my dealer to do cause i have told them about this problem and they seem to be clueless about everything with this car.
R.J.K.
I am getting 265km/165m on easy driving per tank
and 240km/150m on hard driving per tank
My dealer does not deal with rx-8's very often and my car is still warrantied, what should i be asking my dealer to do cause i have told them about this problem and they seem to be clueless about everything with this car.
R.J.K.
05-12-2007, 01:22 PM
#612
Sort of a Wild/Mild switch if you will. Daily driving would be the normal mode while the ability to enjoy the car's potential could be easily turned on. Adaptive learning by the ECU for driving habits is a joke. Especially with more than one driver that often uses the car.
As it is, our cars most likely run far richer than need be as evident by the black deposits on our exhaust tips. Perhaps this would even reduce the flooding issues.
05-23-2007, 06:56 AM
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Finally I managed to get the gas mileage below 10l/100km.
It was 9.63L/100km (24.43MPG). 20% City/80% Highway
How to get this mileage:
Talk with a self phone while driving, then you'll barely exceed 95km/h (60MPH) and in city drive faster [minimum 65km/h (42MPH)] so you can always drive in sixth gear.
Car has 50000km (30000 miles) on it.
It was quite a pleasure to see that tripmeter shows 540km (337miles) before the yellow light came on
It was 9.63L/100km (24.43MPG). 20% City/80% Highway
How to get this mileage:
Talk with a self phone while driving, then you'll barely exceed 95km/h (60MPH) and in city drive faster [minimum 65km/h (42MPH)] so you can always drive in sixth gear.
Car has 50000km (30000 miles) on it.
It was quite a pleasure to see that tripmeter shows 540km (337miles) before the yellow light came on
630.9km & 58.16L => 9.22L/100km (25.51MPG) 10% city/90%highway
now the car has 55569km (34536miles) on it.
Also last time I had winter tires 17" rims now I had summer tires 18" rims.
Yellow light came on @550km
Beat this
06-11-2007, 01:24 AM
#614
I've seen many good ideas here in terms of what people with gas mileage problems should be looking for. I think we should also focus on a long checklist of what the Mazda tech. should look at.
I kinda of have the theory that Mazda dealers will avoid replacing parts or doing any work for free, despite the warranty. If a customer says, "Hey, I get really, really suck gas mileage, so do something". I think too many Mazda dealers are like, "Yeah so. Too bad. You poor baby." etc, etc, etc... and maybe some shoulder shrugs. It appears they will just try to "wait you out". Do nothing to very little, in the hope that you get tired of complaining and go away.
I think the RX-8 owner may have to be VERY specific about the list of things that they want the Mazda dealer to check and verify are working properly.
Here are things that I've seen around here and thought of to help the RX-8 gas mileage situation for various owners:
1. Verify your calculation point. Are you running the RX-8 all the way dry or are you re-fueling when the yellow light comes on??? If you are waiting until the light comes on, than you may still have 1 gallon to 2 gallons of fuel left (so you may have used 13 or 14 gallons as oppose to 15 gallons). Don’t make the mistake of calculating that you have run the tank dry from that point when you do the math.
2. Check your oil? Changed your oil filter? Are you in a hot climate? Think about getting the fan mod? How many oil coolers do you have?
Is your oil low???
These are important, because they seem to be factors. I changed my oil filter from the oem one to a Mazdaspeed oil filter and picked up 1-2mpg. I had been checking and adding oil, but remember to change the oil filter at the designated time. Actually, you may want a high performance oil filter while you are at.
If you are in a hot climate, there appears to be issues with temperature. A 2nd oil cooler (if you have one of the ones that don’t have it), fan mod (search for Looking for a cooler running RX-8? Or go to http://www.mazsport.net).
3. What is the octane level of the gas you are buying? Who are you getting your gas from?
The RX-8 likes 91 Octane or better gas. If you put in lower octane than you are supposed to than that may be the reason why you are getting lower than expected gas mileage. If you insist on using low octane gas to save money, than consider at least adding an octane booster. I’ve used octane boosters with Xylene, with great success. Xylene also burns well, without leaving a lot of deposits, like other octane boosters.
Note/Edit- There seems to be some debate about which is the better octane level. It seems higher Octane is better for performance, but maybe not for gas mileage. Lower Octane, but high enough not cause knocking, may be better for gas mileage. I think the best bet is to stick with Mazda's Octane rating when in doubt, but experimenting with different gasoline from different vendors and with different Octane ratings may help or show something.
I’m getting better gas mileage when I fill up at certain gas stations. I’m not clearly understanding this myself, but it appears the additive package from different gasoline companies are… different. Thus the RX-8 performs better with gas from certain gas companies. I think you need to test this on your own, as oppose to me telling you who to go to and this may vary from state to state or from country to country.
4. You need to rev your RX-8 to at least 6K every day/every other day (higher for the M/T). Have you been doing this?
Some people are babying their RX-8 way too much. This can be hurting your engine, as oppose to helping it. The RX-8 rotary engine is different. Consult this forum or your user manual (just good to read anyway) for more info.
I’ve also seen some more specific advice in this forum, but I’m having trouble locating it right now, but soon as I do than I will let you know. But the above would be a big start for people having trouble with their gas mileage.
More....
5. Check your MAF ( Mass Air Flow) sensor/meter. Here is a link to a part for cost estimate and a reference.... http://www.drivewire.com/mazdaparts...wmassmeter.html
6. Check your Catalytic Converter. It appears that its possible for them to become clogged or damaged in various cases without the a CEL light going off. This can be the cause of an RX-8 eating too much gas or not accelarating "properly", so should be checked by an Mazda dealer.
7. Check your PCM (Powertrain Control Module) / ECU (Engine Control Unit) . It may need to be re-programmed/flashed. It may be injecting too much fuel when your engine is started an causing carbon build up and other issues. It appears that various RX-8 have problems with their ECU / PCM.
Note- results of having the ECU / PCM flashed appears to vary.
8. Check Air Filter or consider buying Cold Air Intake. May improve gas mileage.
9. Check O2 sensor. A defective one can cause overly rich mixture.
10. Another factor worth mentioning is customer expectations. The RX-8 is a sports car. Gas mileage in most sports cars SUCK. You should expect 17 to 24 MPG from the RX-8 and most other sports cars. I think RX-8 users complain a little more, because the price range and the “cool factor” means people buying the RX-8 might have bought an economy car, but choose the RX-8 after looking at it. These same people that are used to a 4 cylinder econo car then have a hard time understanding how to take care of a rotary engine or anything that will get less than 25 MPG. Well, the RX-8 is for FUN. If you don’t want a cool looking and fun to drive sports car, than go ahead and get an econo box and call it a day. Otherwise, I say, go over a list of thing that may be causing poor gas mileage in your particular RX-8. Also, see your Mazda dealer and make sure they check and confirm that there is nothing wrong with your car.
I think we should keep adding to the list, until we got something very comprehensive. Maybe it could resolve the gas mileage problem of a significant percentage of RX-8 owners.
I kinda of have the theory that Mazda dealers will avoid replacing parts or doing any work for free, despite the warranty. If a customer says, "Hey, I get really, really suck gas mileage, so do something". I think too many Mazda dealers are like, "Yeah so. Too bad. You poor baby." etc, etc, etc... and maybe some shoulder shrugs. It appears they will just try to "wait you out". Do nothing to very little, in the hope that you get tired of complaining and go away.
I think the RX-8 owner may have to be VERY specific about the list of things that they want the Mazda dealer to check and verify are working properly.
Here are things that I've seen around here and thought of to help the RX-8 gas mileage situation for various owners:
1. Verify your calculation point. Are you running the RX-8 all the way dry or are you re-fueling when the yellow light comes on??? If you are waiting until the light comes on, than you may still have 1 gallon to 2 gallons of fuel left (so you may have used 13 or 14 gallons as oppose to 15 gallons). Don’t make the mistake of calculating that you have run the tank dry from that point when you do the math.
2. Check your oil? Changed your oil filter? Are you in a hot climate? Think about getting the fan mod? How many oil coolers do you have?
Is your oil low???
These are important, because they seem to be factors. I changed my oil filter from the oem one to a Mazdaspeed oil filter and picked up 1-2mpg. I had been checking and adding oil, but remember to change the oil filter at the designated time. Actually, you may want a high performance oil filter while you are at.
If you are in a hot climate, there appears to be issues with temperature. A 2nd oil cooler (if you have one of the ones that don’t have it), fan mod (search for Looking for a cooler running RX-8? Or go to http://www.mazsport.net).
3. What is the octane level of the gas you are buying? Who are you getting your gas from?
The RX-8 likes 91 Octane or better gas. If you put in lower octane than you are supposed to than that may be the reason why you are getting lower than expected gas mileage. If you insist on using low octane gas to save money, than consider at least adding an octane booster. I’ve used octane boosters with Xylene, with great success. Xylene also burns well, without leaving a lot of deposits, like other octane boosters.
Note/Edit- There seems to be some debate about which is the better octane level. It seems higher Octane is better for performance, but maybe not for gas mileage. Lower Octane, but high enough not cause knocking, may be better for gas mileage. I think the best bet is to stick with Mazda's Octane rating when in doubt, but experimenting with different gasoline from different vendors and with different Octane ratings may help or show something.
I’m getting better gas mileage when I fill up at certain gas stations. I’m not clearly understanding this myself, but it appears the additive package from different gasoline companies are… different. Thus the RX-8 performs better with gas from certain gas companies. I think you need to test this on your own, as oppose to me telling you who to go to and this may vary from state to state or from country to country.
4. You need to rev your RX-8 to at least 6K every day/every other day (higher for the M/T). Have you been doing this?
Some people are babying their RX-8 way too much. This can be hurting your engine, as oppose to helping it. The RX-8 rotary engine is different. Consult this forum or your user manual (just good to read anyway) for more info.
I’ve also seen some more specific advice in this forum, but I’m having trouble locating it right now, but soon as I do than I will let you know. But the above would be a big start for people having trouble with their gas mileage.
More....
5. Check your MAF ( Mass Air Flow) sensor/meter. Here is a link to a part for cost estimate and a reference.... http://www.drivewire.com/mazdaparts...wmassmeter.html
6. Check your Catalytic Converter. It appears that its possible for them to become clogged or damaged in various cases without the a CEL light going off. This can be the cause of an RX-8 eating too much gas or not accelarating "properly", so should be checked by an Mazda dealer.
7. Check your PCM (Powertrain Control Module) / ECU (Engine Control Unit) . It may need to be re-programmed/flashed. It may be injecting too much fuel when your engine is started an causing carbon build up and other issues. It appears that various RX-8 have problems with their ECU / PCM.
Note- results of having the ECU / PCM flashed appears to vary.
8. Check Air Filter or consider buying Cold Air Intake. May improve gas mileage.
9. Check O2 sensor. A defective one can cause overly rich mixture.
10. Another factor worth mentioning is customer expectations. The RX-8 is a sports car. Gas mileage in most sports cars SUCK. You should expect 17 to 24 MPG from the RX-8 and most other sports cars. I think RX-8 users complain a little more, because the price range and the “cool factor” means people buying the RX-8 might have bought an economy car, but choose the RX-8 after looking at it. These same people that are used to a 4 cylinder econo car then have a hard time understanding how to take care of a rotary engine or anything that will get less than 25 MPG. Well, the RX-8 is for FUN. If you don’t want a cool looking and fun to drive sports car, than go ahead and get an econo box and call it a day. Otherwise, I say, go over a list of thing that may be causing poor gas mileage in your particular RX-8. Also, see your Mazda dealer and make sure they check and confirm that there is nothing wrong with your car.
I think we should keep adding to the list, until we got something very comprehensive. Maybe it could resolve the gas mileage problem of a significant percentage of RX-8 owners.
2. Consider the type of oil you are using.
5w20 vs 5w30 or heavier. The lighter oil may give improved gas mileage. If you are using 5w20 dino and not synthetic, than I would consider keeping it 5w30. 5w30 dino should shear down to become thinner and lighter over time. Synthetic would do a better job of keeping its weight over time.
8. In addition to CAI, look into Mazsport hardware mod to turn the fans on earlier and keep the engine cooler. http://www.mazsport.net/store/page9.html
11. Check your radiator coolant.
Is there rust? Does it need to be changed? What's the water to coolant ratio?
Consider using a product like Red Line Water Wetter
http://www.redlineoil.com/products_c...ubCategoryID=4
12. Consider using a fuel additive like Red Line SI-1 Complete Fuel System Cleaner to remove carbon and deposit build up. The Red Line Fuel additive is also a lubricant and anti-rust as well. It can also be used "like" pre-mix.
I believe its use improved my gas mileage.
http://www.redlineoil.com/products_f...bCategoryID=11
Last edited by sosonic; 07-07-2007 at 12:05 AM.
06-11-2007, 09:14 AM
#615
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I have subscribed to this thread as I am very interested in what other owners have to say about their gas mileage and ways they have tried to improve it. I'm amazed at how low mpg many drivers say they are getting. I live just outside the suburbs, so I have a mile or two of country road driving (at 55 mph) and then city driving with a number of traffic lights and stops at intersections. I have had my stock RX8 for 5 months now and have kept very good records. I use Shell 93 octane most of the time (same station 80%). I check my tire pressure and just completed the 15K oil change, etc. All updates have been done. I am not an aggressive driver, nor do I baby it. I'll use the gas pedal when on the ramp to enter the highway. Will zoom-zoom a bit when I have friends in the car with me (show-off).
After last fill up, got 18.36 mpg (with the driving described above). Two road trips I took with 90% highway I got 23.17 and 24.84 mpg. I am planning on a 3000+ mile road trip this summer and will keep detailed records. I'm hoping to get over 24 mpg!
Let me ask this? I've never used Red Line SI-1 Complete Fuel System Cleaner. Have others used it and with what results? Are there any concerns using this product in a rotary? I'd like to get my engine ready for the long road trip and this seems like a good idea to me. OTHER THOUGHTS?
After last fill up, got 18.36 mpg (with the driving described above). Two road trips I took with 90% highway I got 23.17 and 24.84 mpg. I am planning on a 3000+ mile road trip this summer and will keep detailed records. I'm hoping to get over 24 mpg!
Let me ask this? I've never used Red Line SI-1 Complete Fuel System Cleaner. Have others used it and with what results? Are there any concerns using this product in a rotary? I'd like to get my engine ready for the long road trip and this seems like a good idea to me. OTHER THOUGHTS?
06-11-2007, 05:46 PM
#616
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I'm surprised you didn't run out!
That little yellow light to me means - QUICK - NEED FUEL.
The light comes on around the 50L mark.
Pick up problems at around 40L
Run out of fuel problems around 56-57.
I always fill it to the first pump click - doesn't like much more than that
9.22L/100km
06-16-2007, 03:52 AM
#617
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City Fuel Consumption
I've finally managfed to go through a full tank of gas without revving past 4000rpm; It was torturesome to say the least. However I was quite shocked to see the results. 400km on 52 l of 94 Octane Chevron. That works out to 13 l / 100kms on city driving. SO the mazda figures are actually achieveable. I think it all has to do with how heavy your right foot is. Can't wait to see what i get for Highway consumption when I have the chance to take a long trip.
06-16-2007, 08:45 AM
#618
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Pushing your luck there!
I'm surprised you didn't run out!
That little yellow light to me means - QUICK - NEED FUEL.
The light comes on around the 50L mark.
Pick up problems at around 40L
Run out of fuel problems around 56-57.
I always fill it to the first pump click - doesn't like much more than that
9.22L/100km
I'm surprised you didn't run out!
That little yellow light to me means - QUICK - NEED FUEL.
The light comes on around the 50L mark.
Pick up problems at around 40L
Run out of fuel problems around 56-57.
I always fill it to the first pump click - doesn't like much more than that
9.22L/100km
Yellow light means - QUICK - NEED FUEL only when You are doing a little race.
From another Estonian thread I read about a guy, who calculated, how much a RX-8 would consume fuel, when I needs to drive for 700m (400m full acceleration and 300m easy slowdown).
Test showed, that the 8 consumed 0.8L fuel, which makes 144L/100km or 1.63MPG
07-24-2007, 09:50 PM
#620
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Fuel Economy - Canadian RX-8 '04
Hey All,
'04 RX-8 Stock, 50Km, here's what I got:
Driving the way it should (wind'er up in the corners, don't let old people pass you)
- 16.5L/100KM
- 14 MPG
Driving Miss Daisy
- 11.5L/100KM
- 22 MPG
Both roughly 20% city, 80% highway.
Don't think I've ever seen more than 450KM/tank, but the way I drive I avg 330KM/tank in the summer, 290/tank in the winter.
'04 RX-8 Stock, 50Km, here's what I got:
Driving the way it should (wind'er up in the corners, don't let old people pass you)
- 16.5L/100KM
- 14 MPG
Driving Miss Daisy
- 11.5L/100KM
- 22 MPG
Both roughly 20% city, 80% highway.
Don't think I've ever seen more than 450KM/tank, but the way I drive I avg 330KM/tank in the summer, 290/tank in the winter.
08-19-2007, 06:35 AM
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I get 19-20 mpg,average,on my 04' RX with 31K. I run Elf 5w40 and it seems to run better than 5w30,but the gas milage has remained essentially the same. The best I ever got was around 22mpg,and that tankful included a nice long run at +130 mph on rt.89 in Vermont,a couple of years back.
09-24-2007, 10:34 AM
#623
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Join Date: Sep 2007
Location: Vero Beach, FL
Posts: 8
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Hey everyone, been reading this forum since I got my car about a year ago. Did not feel like posting before I read enough, and before I had something new...I hope!
I was flipping through the TV channels and came across a show where they build muscle cars. This show had a segment where they test products to see if they actually work. They tested a Fitch Fuel Catalyst (in a controlled environment) and got improved gas mileage and horse power. Anyone hear of this product? Anyone have one installed?
I have an email into the company to see which product would work best with the RX8, since they don't have the car listed.
http://www.fitchfuelcatalyst.com/index.cfm
BTW, I can get 23 MPG when I drive like a grandma. I have an '07 AT with a drop in K&N filter.
I was flipping through the TV channels and came across a show where they build muscle cars. This show had a segment where they test products to see if they actually work. They tested a Fitch Fuel Catalyst (in a controlled environment) and got improved gas mileage and horse power. Anyone hear of this product? Anyone have one installed?
I have an email into the company to see which product would work best with the RX8, since they don't have the car listed.
http://www.fitchfuelcatalyst.com/index.cfm
BTW, I can get 23 MPG when I drive like a grandma. I have an '07 AT with a drop in K&N filter.
09-25-2007, 09:00 PM
#624
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Join Date: Aug 2004
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I've had my '04 AT for over three years now; I've got 50K miles and I'm averaging just over 22 mpg (roughly 60% hwy, 40% city, semi-agressive driving). I change oil religiously and it's been super reliable.
