I have an issue with my motor and I was wanting to get it on a dyno and into a shop that really knows GM LS motors. I have a LQ9 but with some different parts... I am in the north end...
I have nothing to add other then I was doing some research on this a couple days ago and found this video of these guys tuning some wheelers. I have not used them, and am not endorsing them, just saying they may be worth checking out.
im drawing a blank on the name of the place, but up in smokey point theres a speed shop that does efi tuneing on a dyno, Cam is the the guy doing most of it...