I have a 5.7 LS1 with a Current Performance ECU/harness. No big power adding mods have been made to the engine. I don't know a whole lot about tuning so I don't know how much of a difference a professional tune would make compared to the base tune the ECU came loaded with. Does anyone have any...

Hey folks. I'm looking to rebuild my 1995 4.3 TBI for 350 or so horsepower. I want to do a full carb instead of a TBI as I won't be going anywhere in high altitude. I want to supercharge it with a Wynjammer at some point. I'm aiming for a budget around 3k excluding the Wynjammer. Any...

Alrighr, so i know the 4.3 isnt worth building or putting power behind, but how can i put a new tune on the ecu. I got an exhaust done because i think the motor sounds great, qnd somewhat expected it's runs stupid rich. Like i spit fuel out the exhaust rich. I know i could do the whole eprom...

I have recently bought a 97 rcsb s10 that has a 5.3 lm7 and a nv3500 installed. The person who done the swap done a bad job to say the least. When they done the swap they deleted all four of the o2 sensors and the knock sensors. I have not been able to hook up to the OBD2 port yet cause they...