Tuning in Nashville??????
Performance Garage does some work, but their a/f isn't logged, they just look at a gauge while you're doing your pull.
Just about everybody with a GM product around here goes to Gomer in AL.
There is a shop between Lebanon and Murfreesboro, Delks, that does mostly Mustangs, but they do some LS1 stuff too.
Here's a link to his profile, if you want to PM or email him for more info.
https://ls1tech.com/forums/member.php?u=5321
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