Quote Originally Posted by agent505 View Post
Im reading on the board here that there are ones that can be flashed?
Most PCMs can be flashed unless the company who tuned it locked it. The PCM in you car right now can be flashed.

Don't buy the crap on eBay. Get a tuned PCM from a w-Body vendor or buy tuning software and take the time to learn how to do it yourself.

Quote Originally Posted by agent505 View Post
there are things all over ebay that advertise 20 HP and more mileage, and there are some that are just a simple resistor that plugs into the air flow sensor...
And things like that are what will screw up your car.