I've been slowly putting performance upgrades in for my impala. Air intake, magnaflow exhaust, MAF sensor but it doesn't seem to have impressive results. Then my buddies have been telling me about power control units and programmers, how you can change throttle response and create more horsepower. Are these really good to what they're hyped to be? And which one is the best for creating more horses.
Thanks for your time
have the same problem?
Wednesday, July 30th, 2008 AT 12:06 PM