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Hey all. I ran into something unexpected yesterday doing some street tuning on my buddies car. We both have very similar builds, LS3/stick 5th gen Camaro's, near identical GPI camshafts, etc - so...

More base timing will definitely soften the idle. I like mine to sound as tame as possible (with 19* of overlap) with no fake chop at all - so I have about 20* and very little adaptive idle going on...

I took a different approach - I left ECT and RPM alone (I figure GM knows something I don't about why you'd curve the rpm like that) and simply retarded (increasing) the boundary by how much later...

I found that when dialing in the VVE on my LS3 with a good sized cam (233/253 on a 112) that at idle (~850rpm and 68kpa vac) I have to have the VVE cut in HALF. At light cruise (~1800rpm, 55kpa)...

I appreciate the inputs guys. I ultimately probably will go ahead and let them retune it. Maybe they can give me a baseline pull, and some insight into what they actually are going to change. I...

This is an M6 car, so this isn't about shift points. This is, supposedly, to correct for a potential lean condition resulting in decreased load and increased engine acceleration in PE.

** Disclaimer - I have HPT, but I've only looked at files, I've not purchased credits or the cables to tune my own vehicle. I want to, I'm just not prepared to make the investment in everything,...