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Hey guys installed a cam and ported/polished throttle body
newb here !! Any help?
My 07 Avalanche 5.3 Flexfuel V8, 4L60E had 190k and got a refresh. So I recently installed a Summit Stage2 Truck cam(8701), Crane Springs, timing chain, ls7 lifters and ported/polished the throttle body. I had the engine idling on a base Diablosport 87oct tune. Then I bought the HP, ported and polished the TB. I am having a difficult time with getting the truck to idle, at the current tune it surges up to 3000rpm and dies. I do not have a wideband O2 yet which I know is worth the money but I've watched numerous videos about getting started but to no success. Any help would be greatly appreciated. attached is my tune file and log fileAttachment 97987 and Attachment 97988