need help with a 5.3
#11
But be prepared for a massive learning curve and a lot of trial and error. Just having the software doesn't mean that you're going to gain torque and horsepower instantly. As a matter of fact, if done incorrectly, catastrophic failure may be the case. If you want instant results, I'd recommend consulting the pros who sponsor this site. I believe that Justin at BlackBear Performance will throw in a tune for you if you purchase EFILive from him.
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maxspeed05V
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