Hello, I have a 2010 Camaro that has a tsp cam and was already tuned. I installed a gpi ported intake and had my busted mufflers replaced with some muffler delete pipes ( I hate it way too loud). I've been working on the cam surge, got it down more than it was. But right now I'm concerned about my LTFT, B1 is reading +5% and B2 is reading -2%. Car is on MAF only already did one log and added ~4-5% through the part throttle low rpm. I havent put the wideband yet to get actual reading was just trying to get the part throttle fuel trims dialed in closed. Is it possible that there is a vacuum leak on the manifold? Every once in awhile I think the idle problems are fixed then it start to oscillate on coastdown once stopped it goes away and back to perfect idle.
F-35 SS maf.hpt
ltft diff.hpl