[KingLT1]

Originally Posted by radz28

I know this brand, LOL. However - I'll say, that because I over-ported an LT5 in the past, the tune was already modified with the torque modification you're talking about, so when we installed the "107", when we went through the relearn procedure, it was totally fine. I couldn't say if I didn't already deal with the over-ported LT5 that the 107 wouldn't have been as easy, but all I know is we have 10* at idle, and could command more if we wanted, and it's just fine. I read about some of the stuff I think you're talking about though. Oof. No problems for me though (not because I'm a good tooner or something - just ?probably? because of that LT5-experience).

That TB was worth it for that car's combination though. It lowered inlet vacuum 4-5 kPa at WOT, surprisingly. And that was coming from a less-over-ported LT5.

My brother put one on his C7Z coming from a Katech 103 and the timing went from 23 degrees at idle to negative timing. I said yank it off I am not tuning around that. Lol