How do I get faster acceleration out of my AT RX-8?
02-21-2006, 02:39 AM
#26
ohio gozaimas!
hmm....
Originally Posted by jasonusRX8
I have decided to sell the AT and buy an MT. Getting a supercharger or any other mods would be pointless on the AT. I would rather buy a MT and put the mods on it. Plus, manuals are much more fun to drive.
I really want a supercharger, auto or not. So it would cost me 6k for the manual and 4-6k for the supercharger. We're looking at close to 12k total for what I want. In reality I have just over 6k miles now in a year and a half and that kind of cash would do much better in a 401k. MUCH better. No, I don't want to buy a Civic.
09-19-2007, 03:00 PM
#27
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I have looked into swapping the 4 port transmission for the 6 port and its not possible according to the dealership that replaced my engine (long story there....). I have put a K&N cold air filter and Borla catback exhaust on my 04 RX-8. Are there any suggestions for more power that do not void my warranty. Thanx in advance.
M.
M.
09-19-2007, 03:26 PM
#29
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A new converter and gears, as well as a **** kit, if anyone makes one would be the route I would go.
True the AT does come with a 4 port instead of the 6 port, but gearing and stall speed can make a large improvement to the cars acceleration.
There is a reason why 90% or drag cars have AT tranny's.
Don't listen to all the "newb" comments telling you to get a 6spd instead.
True the AT does come with a 4 port instead of the 6 port, but gearing and stall speed can make a large improvement to the cars acceleration.
There is a reason why 90% or drag cars have AT tranny's.
Don't listen to all the "newb" comments telling you to get a 6spd instead.
09-19-2007, 07:05 PM
#30
I have a 4port a/t and was/am determined to make it work better than stock with a goal in mind. I installed a Pettit s/c and interceptor X and have achieved better than 60% of my goal. With some future mods, I feel confident that my goal of 300hp is achievable.
09-19-2007, 07:49 PM
#32
I have a few ideas that if they pan out may get me there. Your correct presently, but I think you will see more when he releases the new pulley and tunes. I'm not naive and do not expect that I will be anywhere near a 6 port but I do expect the 6 port to get closer to 350 soon. Serious money? I do not know what you consider serious money. All mods are expensive. The stock injectors and fuel pump should allow for 300hp (seems to be agreed upon by the majority on the forum).
09-19-2007, 08:20 PM
#37
Destroying Threads
anyhow, I'm with phil on this, just because its hasn't been achieve doesn't mean i can't be.........and it definitly doesn't mean i can't be done cheap
for some reason you guys always think that "omg his car is all modded out, he must be rich" as a matter of fact......no, nonononoonoono, most of us that mod our cars alot spend wayyy less money than people that got 3-4 things installed........like me for example, I am proud to say that I have spent a grand total of 1527.34$ on all the mods that I have on my car, including bodykit and rims, tires, everything......including install too
for some reason you guys always think that "omg his car is all modded out, he must be rich" as a matter of fact......no, nonononoonoono, most of us that mod our cars alot spend wayyy less money than people that got 3-4 things installed........like me for example, I am proud to say that I have spent a grand total of 1527.34$ on all the mods that I have on my car, including bodykit and rims, tires, everything......including install too
09-19-2007, 10:56 PM
#39
anyhow, I'm with phil on this, just because its hasn't been achieve doesn't mean i can't be.........and it definitly doesn't mean i can't be done cheap
for some reason you guys always think that "omg his car is all modded out, he must be rich" as a matter of fact......no, nonononoonoono, most of us that mod our cars alot spend wayyy less money than people that got 3-4 things installed........like me for example, I am proud to say that I have spent a grand total of 1527.34$ on all the mods that I have on my car, including bodykit and rims, tires, everything......including install too
for some reason you guys always think that "omg his car is all modded out, he must be rich" as a matter of fact......no, nonononoonoono, most of us that mod our cars alot spend wayyy less money than people that got 3-4 things installed........like me for example, I am proud to say that I have spent a grand total of 1527.34$ on all the mods that I have on my car, including bodykit and rims, tires, everything......including install too
i can't wait to see a 6port AT go FI-
09-19-2007, 11:19 PM
#40
As I say every time I post about the 4a/t, it will never be the equal of the 6m/t but we can still have fun and still get good power gains. Now the 6a/t is another species. If the 6a/t internals are similar to the 4a/t, then there could be bigger things in store for it. There were only a few that believed that the a/t would be capable of FI when I started on mine. While some down under were willing to test for a later release, Cam at Pettit felt the same as I and luckily had a a/t at his disposal, owned by Moon, to test and develop. O9factor is the first turbo 4port a/t that I am aware of and has had the support of Mazda Maniac in his endeavor. In fact Charles R. Hill and Mazda Maniac both have been supportive of the 4a/t.
Last edited by Phil's 8; 09-19-2007 at 11:22 PM.
09-20-2007, 10:41 AM
#42
I have been applying my investigations to the 4port a/t (cuz that's what I have). Not sure how to answer your question about the 6port a/t, but with present technology and with what's already on the market - you would need to FI your 6port a/t to be the equal of a n/a 6port m/t. That said, I need to point out that the turbo and the s/c for a/t are in it's infancy, the s/c will shortly have more boost and a flash tool is only a short term away. Your a/t (and a few other items) will need work to go beyond, and while I am confident that the 4a/t can be made strong enough. I presently know nothing about the 6a/t. Now to be clear: Yes presently your 6a/t can be the equal of a n/a 6m/t with FI. Presently there is no known or available mod that will make you the equal of a FI m/t. Is there real hope, of course because where there is a will there is a way. I hope I am clear, if not ask specifically.
09-20-2007, 10:50 AM
#43
Destroying Threads
I understand, but like......idk, because I'm still NA with like only some mods and I seem to go pretty well against the MTs.......... maybe like 10whp diff......? I gotta go get a dyno
09-20-2007, 12:26 PM
#45
Destroying Threads
alright man thanks, when I get a dyno(hopefully soon) I'll post it up here so everyone can see, the only performance mod I can rly say I have is like a catback and foil covered k&N
but my car is alot lighter than stock though, maybe thats why, see ya in person in 2 days phil!
but my car is alot lighter than stock though, maybe thats why, see ya in person in 2 days phil!
09-20-2007, 08:12 PM
#46
It depends how high you rev the engine before putting into gear. A little 4,000 rpm or crazier at 6,000rpm??? It also depends on how often you do it, maybe on the type of transmission fluid your using, and your luck.
09-20-2007, 10:03 PM
#49
Faster acceleration:
. Do breather mod.
Basically, there is an oil return line that goes to your air intake. You re-route the hose to use an oil catch can and then a small air filter. Therefore, your car breathes fresh air and not air mixed with old oil vapor. Do a search to find out more. Note- damn cheap mod.
. Cold Air Intake and/or Ram Air Intake
Colder air and/or more air helps.
. High performance air filter.
Allows more air, but still is a good filter.
. Replace spark plugs, coils, and plug wires (get high performance ones).
You may notice something, I have noticed better performance. I'm thinking the HKS twin power ignition amplifier may be helpful too, but have not received and installed it yet.
. ECU flash
Done for AT by Japanese tuners- Re-Amemiya, R-Magic, and Knight Sports. Basically will increase rev limit to 8,500 to 9,000 rpm. However, I don't think you need to go past 8,500 rpm on the AT. Allows you to get a little more and you will see slightly faster 0-60 to 1/4 mile times. At some point there may be a Cobb AccessPORT ECU re-flasher, but we all are waiting around for news about it. However they are Beta testing it on some RX-8s. You can also use the Int-X EMU, but its expensive.
You may get 10hp to 20hp by going this route as well.
Note- If you increase your rev limit than do buy an ATF cooler and better AT fluid.
. Use manual mode and tiptronic shifter.
Note- This is especially effective if you have flashed your ECU. Basically, you can keep it in a certain gear until 8,000 rpm (which is the "sweet spot"). If in full automatic mode, the car would usually shift gear just before the optimum point.
Note- manual mode is good for 0-60, 1/4 mile , straight lines, or well known turns. I've notice its better to keep it in automatic if weaving through traffic or passing unknown roads.
. Lighter Exhaust and Exhaust Manifold.
Lighter weight should help. Better Exhaust flow should help. For the lightest weight go Titanium, but then that costs more. On NA RX-8 you want 65mm to 70mm (2.5in to 2.75in) pipe to the muffler. For turbo you definitely want 3in + pipe. For price, sound (I like quiet), weight, pipe size to exhaust, and design I thought the Greddy Exhaust has good specs. My R-Magic exhaust specs are close to the Greddy, and I like mine. The R-Magic Exhaust Manifold, is also lighter than stock, so that helps to.
. General Weight Reduction.
This of course would help. Where ever you can find to shave a couple of pounds off.
. Water Pump?
Mazmart's Water Pump may help a little at higher rpms.
. Lighter Pulley / Underdrive Pulley
They may help a little. Note- You should not use and underdrive pulley with the mazmart water pump. You could however use a lighter pulley, but the performance gain vs the risk of install problems would be an issue.
. Lighter tires?
. Go FI or NOS
Turbo or Supercharger, you make the choice. NOS, self explanatory. You will definitely be going faster.
. Do breather mod.
Basically, there is an oil return line that goes to your air intake. You re-route the hose to use an oil catch can and then a small air filter. Therefore, your car breathes fresh air and not air mixed with old oil vapor. Do a search to find out more. Note- damn cheap mod.
. Cold Air Intake and/or Ram Air Intake
Colder air and/or more air helps.
. High performance air filter.
Allows more air, but still is a good filter.
. Replace spark plugs, coils, and plug wires (get high performance ones).
You may notice something, I have noticed better performance. I'm thinking the HKS twin power ignition amplifier may be helpful too, but have not received and installed it yet.
. ECU flash
Done for AT by Japanese tuners- Re-Amemiya, R-Magic, and Knight Sports. Basically will increase rev limit to 8,500 to 9,000 rpm. However, I don't think you need to go past 8,500 rpm on the AT. Allows you to get a little more and you will see slightly faster 0-60 to 1/4 mile times. At some point there may be a Cobb AccessPORT ECU re-flasher, but we all are waiting around for news about it. However they are Beta testing it on some RX-8s. You can also use the Int-X EMU, but its expensive.
You may get 10hp to 20hp by going this route as well.
Note- If you increase your rev limit than do buy an ATF cooler and better AT fluid.
. Use manual mode and tiptronic shifter.
Note- This is especially effective if you have flashed your ECU. Basically, you can keep it in a certain gear until 8,000 rpm (which is the "sweet spot"). If in full automatic mode, the car would usually shift gear just before the optimum point.
Note- manual mode is good for 0-60, 1/4 mile , straight lines, or well known turns. I've notice its better to keep it in automatic if weaving through traffic or passing unknown roads.
. Lighter Exhaust and Exhaust Manifold.
Lighter weight should help. Better Exhaust flow should help. For the lightest weight go Titanium, but then that costs more. On NA RX-8 you want 65mm to 70mm (2.5in to 2.75in) pipe to the muffler. For turbo you definitely want 3in + pipe. For price, sound (I like quiet), weight, pipe size to exhaust, and design I thought the Greddy Exhaust has good specs. My R-Magic exhaust specs are close to the Greddy, and I like mine. The R-Magic Exhaust Manifold, is also lighter than stock, so that helps to.
. General Weight Reduction.
This of course would help. Where ever you can find to shave a couple of pounds off.
. Water Pump?
Mazmart's Water Pump may help a little at higher rpms.
. Lighter Pulley / Underdrive Pulley
They may help a little. Note- You should not use and underdrive pulley with the mazmart water pump. You could however use a lighter pulley, but the performance gain vs the risk of install problems would be an issue.
. Lighter tires?
. Go FI or NOS
Turbo or Supercharger, you make the choice. NOS, self explanatory. You will definitely be going faster.
Last edited by sosonic; 09-20-2007 at 10:34 PM.