someone please check my tune out, misfiring and cant figure out why
hey guys, ive searched high and low for why my car is doing this and i cannot for the life of me figure out why my car is having this issue.
issue: the car breaks up(misfires) between 2000-3500 rpms, then past that runs fine. i have it setup for OLSD, AFR is roughed in as well with timing. heres the kicker, when i try and log misfires on each cylinder, it records 0s across the board, however its clearly misfiring. when im logging timing, where im commanding around 35 degrees its only showing 15-18 degrees??? i have just about all the adders, multipliers, and subtracters zeroed out so it will not do that yet its clearly yanking out timing, i have a feeling if i can bump up timing that might fix the issue, however no matter how much timing i throw at it in the misfire area, it wont come up. AFR at part throttle is at 13.5- 14.2ish, remember its roughed in in preparation for the dyno. im hoping i just missed something stupid, as why im asking for help on here.
mods: 2002 Trans Am WS6 M6: forged 383 11.6:1 compression, mammofied AFR 230cc heads milled 55cc, 243/248 .624 .615 113+1, LS3 42 shortys, ported FAST 102, big mouth 102 throttle body, TSP 1-7/8 headers, ory, gmmg catback, powerbond underdrive, Fast toyz 104mm air lid, SSR ram air system.
misfire 6 log is me just firing up the car and going through the gears just getting it to misfire.
any input is greatly appericiated guys, if anyone can shed some light on this that would be awesome.
sincerely
Tom
Reply With Quote