silversweetZ

iTrader: (11)

So i just got my PCM back with my base tune done with EFI live. 2002 Camaro with an Incon twin turbo Stage III kit. 2002 5.3 iron block, 2002 Z06 cam 80lb SD injectors, LS6 intake, Aeromotive FPR. So right off the bat it starts rough, idles rough but with no codes at idle. Have 1/4 tank 91 octane (all we get here) running with dual 255's with one on a 4 lb hobbs switch. driving around the car stumbles pretty bad and backfires a little, as soon as you get into the throttle it stumbles then picks up. I get up to 6 lbs boost but isn't pulling no where like it should. Went thru almost 1/8 tank in 37 miles and i'm getting a p0327 code for low knock sensor voltage (i'm assuming maybe with the tune since it wasn't there while N/A). My question is I have a Cobalt ss map. Key on/engine off it reads 24.6 in Hg. Barometer here says 29.88. I told this to my tuner and he had me bring back the PCM for offsets. Still runs bad. Any ideas? Wideband's are pegged at 10.0 at WOT. Should I try another MAP? I did after all get it off fleabay.

Thanks

joecar

Do you have any log files of what you said happens...?

Your tuner should be able to fix all those problems.