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Old 09-14-2021, 02:03 PM   #21
LT1ornothing

 
Drives: 2020 LT1 M6
Join Date: Jan 2016
Location: South, the DEEP south
Posts: 1,114
Quote:
Originally Posted by grampa_ss View Post
I went thru this exact situation 2 years ago. I had the same setup as you. Procharger with DR’s. Car went 11.9 at 117. Car put down 580rwhp. Well, it sure didn’t run like it. So I got a tune and wow what a difference. Car went 10.8@129. You need a tune, then you’ll feel your Procharger.
That is an incredible difference between the crap canned tune and a good tune, especially if it was on the same pulley. That's over one full second ET gain and 12 mph. Definitely going for the tuner kit on whatever I can get my hands on.
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