Cobb AccessPORT Discussion
#3501
weeeeeeeeee
iTrader: (12)
The only reliable method I've found for measuring mpg is the tried and true means of filling up, resetting the trip, driving till warning light, filling back up noting mileage and gallons and dividing mileage by gallons.
Last edited by ShellDude; 07-20-2008 at 07:57 PM. Reason: typos
#3502
Original Turbo 'd Auto !!
MM,
I know this is more in line with the AP on Turbo thread.
I still having the Extreme Richness @/near 100 Gm/S.
plugged the water/meth line. The BOV has no way to open. I looked at the plunger seat and it tight and seals againg the plunger.
Could it be turbulance from the outside arccordian Cold Air pickup hitting the MAF? I have ONE Screen before the MAF...
Oh I also changed the MAF out, did a reset and tried again. was able to reproduce the bog.
I'll take the CA tube off that connects to the K&N MAF tube tonight and see.
If thats not it,,,, any ideas?
I checked the couplers and all are tight. manifold bolts are torqued to spec. manifold hoses are all connected...
I know this is more in line with the AP on Turbo thread.
I still having the Extreme Richness @/near 100 Gm/S.
plugged the water/meth line. The BOV has no way to open. I looked at the plunger seat and it tight and seals againg the plunger.
Could it be turbulance from the outside arccordian Cold Air pickup hitting the MAF? I have ONE Screen before the MAF...
Oh I also changed the MAF out, did a reset and tried again. was able to reproduce the bog.
I'll take the CA tube off that connects to the K&N MAF tube tonight and see.
If thats not it,,,, any ideas?
I checked the couplers and all are tight. manifold bolts are torqued to spec. manifold hoses are all connected...
#3504
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I've read 90% of this thread and I have a question I don't think has been asked before.
Would installing larger injectors for a NA Renesis have any impact at all? I'm thinking along the lines of adjusting the timing of the fuel injectors. More fuel in shorter time to get a better boom.
Would installing larger injectors for a NA Renesis have any impact at all? I'm thinking along the lines of adjusting the timing of the fuel injectors. More fuel in shorter time to get a better boom.
#3506
04 and still lovin it
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If your current injectors can give you ideal injection the option of providing more would be waste uless you can provide it with more air to mix with it.
I've read 90% of this thread and I have a question I don't think has been asked before.
Would installing larger injectors for a NA Renesis have any impact at all? I'm thinking along the lines of adjusting the timing of the fuel injectors. More fuel in shorter time to get a better boom.
Would installing larger injectors for a NA Renesis have any impact at all? I'm thinking along the lines of adjusting the timing of the fuel injectors. More fuel in shorter time to get a better boom.
#3508
Original Turbo 'd Auto !!
#3509
Why so silly?
I see significant gains advancing injection timing and extending injection duration on my diesel engine. Are the RX-8 injectors not electronically controlled or am I just spark plug stupid? Concept would be the same.
![Confused](https://www.rx8club.com/images/smilies/confused.gif)
#3512
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Join Date: Jun 2008
Location: New Jersey
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I want to AP my car. i was at the dealership today and my friend works there. i like my warranty... he said you can kiss it goodbye as soon as the AP is programmed. How true is that? Anyone had any problems with it?
#3513
When you go in to the dealer, just uninstall it.
Second, it does nothing to your car that will damage or modify it physically.
The only thing it will do is eventually destroy your CAT.
Unfortunately, that is why Mazda has crippled the performance in the first place - to make the CAT live up to Draconian EPA standards.
Of course, there are several ways to deal with that eventuality.
#3515
Like Jeff said, worse case, hit UNINSTALL and your car is back to exactly the way it was prior.
#3518
weeeeeeeeee
iTrader: (12)
Highway Only Fuel Economy
Here's some fuel economy data. Sorry for no non-AP baseline. I didn't start collecting data until after I started flashing Jeff's maps.
All entries are PURE interstate highway driving... one or two stops, at most (pee/coffee breaks mostly).
All driving consisted of 70mph to 80mph average between Pottstown, PA, and Sevierville, TN.
All entries are PURE interstate highway driving... one or two stops, at most (pee/coffee breaks mostly).
All driving consisted of 70mph to 80mph average between Pottstown, PA, and Sevierville, TN.
![](http://www.shellware.com/images/rx8/highway-mpg.jpg)
#3520
weeeeeeeeee
iTrader: (12)
I just checked a couple of the dedicated fuel economy threads and I'd say my numbers are definitely high end "outliers" ![Smilie](https://www.rx8club.com/images/smilies/smile.gif)
The trick is go with a top tier fuel, fill up immediately before entering the highway, make as few stops as possible, use cruise control between 70-80 mph, and run as much of the tank as possible. Effeciency increases significantly the longer you can keep her constant on the road.
![Smilie](https://www.rx8club.com/images/smilies/smile.gif)
The trick is go with a top tier fuel, fill up immediately before entering the highway, make as few stops as possible, use cruise control between 70-80 mph, and run as much of the tank as possible. Effeciency increases significantly the longer you can keep her constant on the road.
Last edited by ShellDude; 07-22-2008 at 12:46 AM.
#3522
Can you possibly create a "economy" map for long haul cruising such as this?
#3523
weeeeeeeeee
iTrader: (12)
25 mpg is pretty damn economical for the RX8 in my book! I think part of Jeff's point is that his base maps have an economy factor of sorts built into them just by providing for a more effecient high end map.
The above data was collected over 2 round trips consisting of approximately 2,400 miles total. During the course of the trips I put in a smidge over a quart of oil... started off full and ended up full. I'm assuming this is also a bit better than what we'd get stock. I REALLY like the idea of my rotors getting extra lube
The above data was collected over 2 round trips consisting of approximately 2,400 miles total. During the course of the trips I put in a smidge over a quart of oil... started off full and ended up full. I'm assuming this is also a bit better than what we'd get stock. I REALLY like the idea of my rotors getting extra lube
![Smilie](https://www.rx8club.com/images/smilies/smile.gif)
Last edited by ShellDude; 07-22-2008 at 01:14 AM.
#3524
Yeah, the only caveat to the economy tuning is that the calibration is the proper one for your car.
That means, get the car up to 4200 RPM or so in 4th, hold it at that RPM for at least 20 seconds and look at your AFR (equivalence).
If it is below 14:1, I need to adjust your injector scaling a bit.
This is especially the case if you are running one of the "b" series calibrations.
That means, get the car up to 4200 RPM or so in 4th, hold it at that RPM for at least 20 seconds and look at your AFR (equivalence).
If it is below 14:1, I need to adjust your injector scaling a bit.
This is especially the case if you are running one of the "b" series calibrations.
#3525
25 mpg is pretty damn economical for the RX8 in my book! I think part of Jeff's point is that his base maps have an economy factor of sorts built into them just by providing for a more effecient high end map.
The above data was collected over 2 round trips consisting of approximately 2,400 miles total. During the course of the trips I put in a smidge over a quart of oil... started off full and ended up full. I'm assuming this is also a bit better than what we'd get stock. I REALLY like the idea of my rotors getting extra lube![Smilie](https://www.rx8club.com/images/smilies/smile.gif)
The above data was collected over 2 round trips consisting of approximately 2,400 miles total. During the course of the trips I put in a smidge over a quart of oil... started off full and ended up full. I'm assuming this is also a bit better than what we'd get stock. I REALLY like the idea of my rotors getting extra lube
![Smilie](https://www.rx8club.com/images/smilies/smile.gif)
heh