Well, the biggest reason i wanted to re-install it was for the stage selector, and the fact that you can electronically manage fuel, boost, timing, and all that. Also, a friend of mine has a UTEC installed on his 02 and he said it made a huge difference in how the car was running. Now i know an opensource tune would help the same way, but i just want to make sure first off, that im doing the right thing not re-installing it, and that im going to see the same amount of power levels i would with it installed. But im also not familiar with opensource tuning. So im not sure what the big differences would be.