Air intakes?
06-09-2006, 07:43 PM
#21
Senior Member
Join Date: Aug 2004
Posts: 426
Originally Posted by wankelTII' post='823141' date='Jun 8 2006, 05:16 AM
ok, so maybe not 10 hours but it should take alot longer than people usually want to spend on it. I have tuned or help tune 2 or 3 rx8s with interceptors and it takes more than an hour, of course the intake and exhaust were custom and a bit extreme, definately not for street use. That said, we had to fluctuate from the base map quite a bit.
how could the intake and exhaust make it not for street use, other than noise? niether one will affect the powerband drastically. port timing and manifold design will probably show the most significant gains in the n/a world, aside from the ems stuff.
06-10-2006, 11:36 AM
#22
Member
Join Date: Apr 2006
Posts: 83
They were race cars. With tuning the powerband WAS affected drastically, we gained like 50hp in the mid range, but peak hp was never over 215 and was only about 200 or 205 with the final tuning. Torque was alot more too. They may have been somewhat streetable as far as power goes, but they were really really loud, had full cage, hollow doors, a hacked up dash, no interior, etc. They also had solid hub clutches and ACT flywheels. The intakes consisted of a straight pipe with a venturi on the end (no MAS), and the exhaust was 3inch open all the way back with a strait through 3in muffler. In the end there were almost no sensors on the cars at all, we basically just had a wide band to look at (not hooked to the computer) and fixed fuel and ignition maps with all the major sensors disabled, i would have rather had everything and worked on getting it all to work correctly together but it wasnt my call. Now i think they are running fully built engines even though thats not exactly legal. I am no longer with the team, i had my reasons for quiting.
i agree about the port timing and intake mani making the most difference, they are everything on a rotary. And any n/a car.
i agree about the port timing and intake mani making the most difference, they are everything on a rotary. And any n/a car.
06-12-2006, 07:24 AM
#24
Member
Join Date: Apr 2006
Posts: 83
well, call what you want, i dont work for the team anymore so its going to be difficult to come up with a dyno sheet. It was done with an Interceptor and a dyno that was capable of load based tuning. Stock ecu was still there, Interceptor basically lets you do what you want though. Took a long long time, started from scratch. Picked up somewhere between 40 and 50 hp when all was said and done.
06-17-2006, 01:21 AM
#28
Senior Member
Join Date: Aug 2005
Location: Freeport FL
Posts: 381
Man I actually read all this lol. I am going to have to agree with guitarjunkie here he ahs been right on this whole thread. The rx-8 is a pital to mess with the computer is to damn smart for its own good. Yes it will learn your mods but not for performance it will learn them to detune to what it wants to keep everything safe and daily driver friendly.
With proper fuel tuning 35hp can be found quite easily and one again on this car the only mod out of the box worth doing is some sort of engine management.
Now I don’t think I believe the post about the 50hp but I don’t doubt an obtainable 50hp can be found from tuning. But without a P style port a 3in exhaust will cause a loss as the velocity is gone.
With proper fuel tuning 35hp can be found quite easily and one again on this car the only mod out of the box worth doing is some sort of engine management.
Now I don’t think I believe the post about the 50hp but I don’t doubt an obtainable 50hp can be found from tuning. But without a P style port a 3in exhaust will cause a loss as the velocity is gone.