I want to increasee hp on my car. I'm not really too keen on car moding. I was thinking of going all MS moding, but I'm not sure if it is worth it. So anyways, here are some questions:

1) Honestly what kind of intake is the best (i know RB gets a lot of props, but is it really that good? This part of the forum is sponsored by RB, it seems kinda fishy that RB gets so much respect)?

2) What do you think about the MS intake?

3) Is there an aftermarket supercharger coming out?

4) What is N-Flash?

5) What is a CZ unit?

6) What is the most comfortable aftermarket springs/coilovers availble?

7) Is it me, or is the rear lower than the front (the gap from the tire to the fender seems bigger in the front than the gap in the rear)?

8) Do you really need to change oil every 3,000 miles? If that's the case, I have to change my oil every 1.5-2 months (I use to have an Integra and I changed the oil every 6,000).

9) I want to change the back doors to sliding doors and the front to scissor doors (you guys call it lambo doors). Are there bolt on brackets for sliding doors coming out?

10) Has anyone heard anything about power window kit for the back windows?

11) Is it bad to drive 90% of the time in 1st and 2nd gear on tektronic (I drive 25 miles in LA traffic everyday for work. I barely get to go over 50mph on the freeway)?

12) Is it true that Intake and Exhaust will do nothing to an auto as far as HP?

 

I really hate doing this, but have you done a search? Off the top of my head I know you can find answers to 1, 3, 4, 5, 8, 11, and 12.

 

Well there are 100's of threads that could answer my questions, but most of the answers are for 6spd.

 

I have most of the ms goodies on my ride, so I can probably give a little feedback. If you're going to get more MS stuff get the suspension parts and the lightweight flywheel, those are mainly the ones that make the most difference. The flywheel can frees up more hp and allows your 8 to rev a lot faster.

1. RB has been around for quite some time, they were recommended even before they sponsor this site. Never had any of there products on my car, but seen and read a lot of threads on them they are honest and reputable, and they are probably your safest bet
when looking for aftermarket parts.

2. There is no MS intake, if there is one it's a knockoff. I have the MS air filter, did nothing but I needed to change filters anyways, and I don't like having the oem 'pink' filter in my car :p.

3. There is an aftermarket supercharger coming out, but it seems that you're worried about your warranty, so these units would void your warranty. Look at the major horsepower upgrades thread, look up hymee, axial flow, and petitt. They all are developing s/c for our beloved 8s.

4. The N flash basically rewrites your PCM with latest programming from mnao. Anything a flash comes out it's suppose to solve or improve on some issues the car might have. (search to get more details).

5. CZ is a piggyback unit that goes right above your pcm. It kinda tricks or gives of signals your ecu and adjusts your air fuel ratio and gives you more power. Typically 10-15hp. But most of the time to see any significant gains you have to get this unit tuned.

6. Stock ones Coilovers, springs normally increases the spring rate, or stiffens the ride and makes it less comfortable. MS has a coilover setup do a search.

7. Yeah in most rx8's the rear is lower than the front. But when I had mine it was even. Beats me. I had that question before too.

8. Depends how much you like your car. I would never exceed 3000 miles per oil change especially on a rotary.

9. Yes, search for lambo doors.

10. Why?

11. I don't have an automatic so I wouldn't know, but I don't think its bad, but you're wasting more gas by keeping it at higher rpms.

12. The revi intake gives a good 5hp, in most applications. Exhaust at most 4hp. Not the best bang for your buck if you ask me. If you solely want to buy these things for perfomance, not worth it. (maybe the revi 289.00 not bad) Most people that purchase exhausts solely base their purchase on sound and appearance.

Good luck to ya.

 

Thanks for the response, but I need answers from someone with an auto or that has exprienced and tested their automatic with the exhaust, intake, etc.

 

1) Honestly what kind of intake is the best (i know RB gets a lot of props, but is it really that good? This part of the forum is sponsored by RB, it seems kinda fishy that RB gets so much respect)?
RB has worked hard by making quality products that they stand behind, they put a lot of effort into their parts and do quite a bit of R&D before the parts ever hit the streets, so I think they have earned that respect with their track record. Also the REVi intake is made by a company that has a long history with the rotary. Not always true with some of the other companys that offer intakes for the RX8

2) What do you think about the MS intake?
as far as I know, isnt the MS intake just a different filter element? speaking on that I though the only MS parts for Power were the air filter, catback and ECU program. Even the actualy MSRX8 you could buy in japan wasnt that much more powerful than the regular one. most of the MS parts are geared for handling, and getting the power the car already has to the road.

3) Is there an aftermarket supercharger coming out?
there are both supercharger and turbocharger options for the RX8, greddy is the big kid on the block right now, but there are other options on the market and coming out.

4) What is N-Flash?
its one of the ECU programs for the car (now outdated I belive) basicaly its like a map for the car, telling it how much air/fuel to mix, and when to ignite the mix (timing)

5) What is a CZ unit?
with other cars, a big way to make power gains are with a new program for the ECU, as mentioned above, you can adjust how much fuel is mixed, and when to both make more power and change the power band (when the power comes in, ect) right now the only programable ECU is the motec (i think, could be wrong) and it is VERY expensive, and not geared for a street car, the CZ, can-zoomer alows you to change the air/fuel maps not by modifying the ECU but by changing the signal the ECU sends to the car.

6) What is the most comfortable aftermarket springs/coilovers availble?
this depends on what you personaly feel is comfortable, what you like and I like is different, also it depends ont he quality of the roads you drive on, if your talking about a coil-over set I find Tein is great for improving the handling of the car, but still keeping it fine for daily driving. again its hard to rate all of them side by side, cause the differnt spring rates and shocks all cahnge the way the car will ride. I personaly am going to go with the JIC parts, but the MS ones or tien would be my recomendation for a street car that sees little track use.

7) Is it me, or is the rear lower than the front (the gap from the tire to the fender seems bigger in the front than the gap in the rear)?
i dont really notice on my car, but I wouldnt doubt it, youll see other cars with this same look, esp BMW's. its not a bad thing. a small rake front to rear (front lower than rear) can help with the aero dynamics as well as adding more shock travel to the rear, and I think it makes the car look mean :-)

8) Do you really need to change oil every 3,000 miles? If that's the case, I have to change my oil every 1.5-2 months (I use to have an Integra and I changed the oil every 6,000).i change my oil in every car every 3k miles or 6 months, whatever comes first. the book calls for changing the oil ever 7500 miles (service schedule A) or every 5K miles (service schedule B) the difference in A and B, A is for 'normal' use and b is for 'sever' use, i personaly would at least stick to what the book says, and I would follow B, but as long as your not going more than 7500 miles in a change mazda feels that is safe for the car (at least for the 4 years they have to foot the bill for repairs )

9) I want to change the back doors to sliding doors and the front to scissor doors (you guys call it lambo doors). Are there bolt on brackets for sliding doors coming out?hrmm sliding doors would be interesting,the only door mod I have seen is the front 'lambo' doors, while that kind of thing isnt my 'cup of tea' im not sure if it would work, its kind of cramped back there.

10) Has anyone heard anything about power window kit for the back windows?
again im not sure, i dont know why you would need it, i can reach back and open them, im sure you could rig up a small motor to pop them open, unless your talking about having the back windows go up and down, then I have no idea, but it sounds like it would be expensive

11) Is it bad to drive 90% of the time in 1st and 2nd gear on tektronic (I drive 25 miles in LA traffic everyday for work. I barely get to go over 50mph on the freeway)? as long as your staying out of redline, and the car is warmed up before you start using high rpms i dont think its a problem, i dont have any experience with the auto trany on this car

12) Is it true that Intake and Exhaust will do nothing to an auto as far as HP?
no, intake, header, catback will all change the power band and can add more power, just not as much as other cars. or as much as the same money spent on something like FI

 

grrrr, i had that whole reponse typed up and was gonna be first to respond, then i had to run over to north property and when i got back for some reason even though i hit post it didnt, damn it, lol oh well. no big deal

 

geez leweez! to get these questions answered you should join an internet rx8 forum! Oh yea..nevermind..haha

 

Most of the questions you have though doesn't have anything to do with the type of power train one has. So all your questions are pretty much covered.

 

Okay.

4 & 5) When you are talking about N-Flash and CZ unit. When are messing with it to gain more hp, does that mean less mileage per gallon?

9) It would be also a convienence if the doors in the back could slide because I noticed it's hard to get in the backseat if someone parks too close to you.

10) I smoke ciggarettes and so do my friends, it would be more convienent if the windows in the back would roll down a bit for the smokers in the backseat.

 

No part of the CZ's strong point is that you "lean" out your air/fuel ratio (as well as adjust your timing). The stock computer usually runs the engine very rich (uses more fuel than is needed), you can get more hp & improve your gas mileage a bit. You do use a bit more fuel when you advance your engine timing but you get hp increase & might get mpg increase (leaning out engine vs. advancing the timing). Get it professionally tuned.