Ls1 coils made no difference compared to stock. New plugs gapped to .8 2nd afm cleaned with proper electrical cleaner, two different cas, no difference. Dont need a consult cable, did the old check engine diagnostic check engine light for fault cods, none shown. Once stalled I have to hold throttle flat after about 10seconds of cranking it fires, but really rough. Tps has been reset and tested countless times.