lean

I just got my GTE running and it idles smooth (too high but smooth), and runs smooth. However, when ever I get into boost it starts leaning out bad. It pulls strong but then it start to gets weak when the turbo start spooling. I haven't been able to figure it out. Mods: Intercooler kit 3...

if i get a bigger intercooler would i have to get my car tuned? wont a bigger intercooler allow more air to go into the engine, therefore it will run leaner?

alright well im looking to buy a new exhaust system because the idiot i bought the car from put a 3 1/2 inch straight piping exhaust system on. Im loosing Back Pressure and im looking for an exhaust system with more resistance, maybe even the stock one... so if you could please make some...

I have been running *very* lean in the 3-4k range under part throttle, the dangerous spot that we are told shows itself when you remove your EGR system and run a USDM ECU. Vf always seem to be normal when the off-the-chart lean condition shows itself. To fix this, or so I hoped, I purchased a...