1SloGTSguy

I have noticed everyone talking about Adding Intakes Exhaust and Headers and finding out which ones add the most power. But has anyone ever thought about hooking up a gauge to tell the Air/Fuel ratio? You add these things for the car to breath like hell but what about starving it of fuel now... adding bigger injectors and fuel pump or whatever... THEN getting it tuned... The cars could be running lean with all these air modifications. I haven't embarked on this yet because im still doing research on the exhaust I want to go with my Injen CAI.

SPARTAN-163

Im 90% sure the 4b12 runs wicked rich stock

Carvs

iTrader: (9)

Agreed

M@verik

Yes both the 4b11 and 4b12 run quite rich. I had to add an intake and in addition lean out the mixture for a nice gain.

SPARTAN-163

My research on exhaust has led me to choose the HKS option. IMO, it sounds the best, and has the best data (other than the greddy's) to back it up