97-98 LS1 Corvette Tune Year_2021 Module / primary service number:

Module / primary service number: 12583827

Programmed Engine Computer for 2016 - 2017 Charger

without ext build date RPO ZN4 1998 GMC S-15 4

6L 2007 Saturn Relay 3

Module / primary service number: 12581598

97-98 LS1 Corvette Tune Year_2021 Module / primary service number:Stock LS1 engines typically yield 15 to 20hp and 25 to 30ft lbs of torque increase throughout the powerband, these numbers will increase accordingly depending on your modifications. We can make adjustments for various engine modifications as well as engine swaps. You will send us your computer or we can provide you with one. If you wish for us to send you a computer simply purchase one from our Factory ECM Category. Your computer will be adjusted per