My modded LT1 runs better without the tune???
So after the mods in my sig I install the PCMFORLESS mailorder tune. I dont even try starting engine without it. Car starts right up and runs good. Well it seems to be declining in performance the last couple drives. I have unhooked the battery over night to reset the computer but it doesnt seem to do anything. Today i removed the PCM piggyback adapter just to see what would happen. Car started right up. idled @650-700 vs 900-1000 with tune. sounded really good. throttle response was faster and it reved smoother. It seemed to have better power throughtout rpm range rather than low, lowend and high, highend with the tune. Whats the deal? Maybe someone broke into my garage one night and stole my cam. They must have replace it with the stock one so i wouldnt notice.......


