Hey folks.

I bought a 27 mm SIR from Raetech a couple of weks back when this whole deal took off. I haven't fabricated a system up to use it yet for two reasons. 1/ Not sure how this SIR deal is going to shake out. 2/ Not quite sure how to legally get it to fit the car.

I did however attach the SIR to my air mass sensor with the car idleing, and it made a big difference to the idle and when giving the car throttle it ran like crap and started pumping out black smoke!

I know that it's supposed to work better when the SIR is placed thurther away from the intake. It looks like the only way to do that is move the radiator.

Has SCCA ever used SIRs in production based fuel injected motors?

If they wanted to slow down the E36 why didn't the just go to a smaller FPR?