Ive got a 01 vette with a 402 twin turbo set up in it. Im running c16 fuel in it, and wanted to know what kind of timing curve is best for my car leaving on 10lbs of boost then coming into 16lbs by 2nd gear. currently the car is leaving at 20 degrees and after about 3rd gear its going to 12 degrees. car doesnt feel like its making any power on the big end. can anyone give some suggestions?

 

I would say the top end timing is low for a C16 setup, but it really depends on your setup.

For example, if your turbos are pinching hard up top your setup isn't going to tolerate much timing - and it will feel like a turd up top at the same time.

Unless your making massive amounts of power through a high stall this is probably something that is better dialed in on a loaded dyno while watching KR, reading plugs, and watching for the point of diminishing returns as you ramp up the timing.