Single Turbo Choice: Street and AutoX Car

IR Performance · 11-25-2008, 08:24 PM

For autocross you'd be happy with a T3 gt35r with the smallest hot side option. You will be limited in top end power, but you will want the spool to get you out of the tight turns. Otherwise you could go with the Apexi RX6 but I have never liked that kit. BNR's are great for those wanting to keep costs down and stick with twins, but the very non-linear power band will be difficult to manage at autocross. Even stock twins exhibit the same problems once you have too many mods. There is just too big of a sudden power surge when they transition and it can send you right into a wall.

sbrian2 · 12-01-2008, 09:12 PM

Quote:

Originally Posted by Chadwick

I also have to weigh in with the Twins crowd. I have yet to run across a single that can come online as quick as properly tuned twins. I personally run the 99's but am considering going to BNR's when they die. I actually need to talk to Brian about the possibility of making a set that keeps the smaller primary and a larger secondary.

Dan

In with the twins too. Dan's car is so good with the 99's it is hard to imagine that the power band could be better, but we have discussed the idea of a BNR hybrid setup if it could be made.

Quote:

Originally Posted by IR Performance

BNR's are great for those wanting to keep costs down and stick with twins, but the very non-linear power band will be difficult to manage at autocross. Even stock twins exhibit the same problems once you have too many mods. There is just too big of a sudden power surge when they transition and it can send you right into a wall.

I disagree. While most FDs I have driven have this characteristic, it can be tuned out. Dan's car has a very smooth power curve and the only real way you know that you are in the 2nd turbo is by the change in the pitch of the engine and the fact that everything looks like it is in fast forward

. I was able to hop in his car and be very fast out of the box despite the fact that I have driven a low horsepower (114 to the wheels) E Stock Miata for the past 6 years.

albertomg · 01-08-2009, 06:34 PM

Quote:

Originally Posted by sbrian2

I disagree. While most FDs I have driven have this characteristic, it can be tuned out. Dan's car has a very smooth power curve and the only real way you know that you are in the 2nd turbo is by the change in the pitch of the engine and the fact that everything looks like it is in fast forward

. I was able to hop in his car and be very fast out of the box despite the fact that I have driven a low horsepower (114 to the wheels) E Stock Miata for the past 6 years.

How much boost are you guys running on that car?

11-25-2008, 08:24 PM	#1
IR Performance Rotary Fanatic Join Date: Feb 2008 Location: Metuchen, NJ Posts: 249 Rep Power: 18	For autocross you'd be happy with a T3 gt35r with the smallest hot side option. You will be limited in top end power, but you will want the spool to get you out of the tight turns. Otherwise you could go with the Apexi RX6 but I have never liked that kit. BNR's are great for those wanting to keep costs down and stick with twins, but the very non-linear power band will be difficult to manage at autocross. Even stock twins exhibit the same problems once you have too many mods. There is just too big of a sudden power surge when they transition and it can send you right into a wall. __________________ Providing rotary engine rebuilds, porting, turbo installs, parts installations, full maintenance, etc. We work on all cars. www.irperformance.com www.myspace.com/rotaryexperimentseven irperformance@live.com 732-662-1794 Last edited by IR Performance; 11-25-2008 at 08:27 PM.