1997 Gmc Sierra Tune.

[MaForrest]

I was wanting to get my '97 sierra tuned up and I was told that Justin and Blackbear is the way to go. I was just curious if anyone here has taken in a 5.7 to get tuned and what sort of gains I can expect after having it done. Thanks.

[dannyboy20]

Not quite the same but I had a 98 5.0 tuned by Justin and was very pleased with the outcome. The shifts were more firm and the acceleration was much improved. I was deffinetely impressed.