Tunedbygerb New Reader
12/25/23 6:29 p.m.

Hey everyone  I have a 1999 gen 3 Chevy Silverado 5.3.  Looking to add some timing to the truck and maybe boost up some other things.     Does anyone have a tune file for this   New and trying to look at different files and or get some guidance 

rustomatic HalfDork
12/26/23 8:33 a.m.

You will find the best collection of tunes on the HP Tuners site (repository) itself.  It's a treasure trove of opportunities for copy-and-paste.  There's also Sloppy Mechanics, but that could get you in trouble . . .

MadScientistMatt UltimaDork
12/26/23 8:38 a.m.

First, you don't want "a" tune file. You would want a tune file that matches the exact set of mods on your motor, or at least is from a motor that's closer to yours than to stock. So you'll want to start by listing what mods you have; anyone who offers you a tune file without any idea what your mods are isn't someone you want tuning advice from.

Also, LS motors don't really like a lot of timing. They have a very high flame front speed, and too much timing will reduce power. You don't want advanced timing so much as the right amount of timing for your build.

12/26/23 8:49 a.m.



I am curious as to why you have singled out the advance curve as the target parameter to try changing and how you are going to measure/validate the results?



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