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Welcome to LS1 Tuning Guide

Over the years, fellow tuners have made files to help others setup tables in HP Tuners and they can be difficult to find. I have posted them here, on my site, and I will add more as they become available for you to use for free. You will find online spreadsheets to adjust your injector flow rate for the HP Tuners IFR table, a transmission tuning spreadsheet, and other useful help files. No Excel needed. I will have a tuning guide available very soon for purchase that I made to help the beginner learn HP Tuners and to use a wideband to dial in the VE, MAF, Idle, spark and other tables and transmission tuning. Easy to follow instructions and definitions of what you are doing and why you are doing it. .

HP Tuners Files - CFG, PID, Tunes
GM Diagnostic Trouble Codes DTC and Definitions
GM PCM Pinouts and Schematics
Racing and Horsepower Calculators
Connect Your Wideband to HP Tuners Pro
LS7 Injector Data for Your LS1 PCM