If you're getting a full exhaust I'd go ahead, and get it. But even after you get the exhaust, and the PC (PCIII USB, right ?), then you need to take it to a tuner that knows what they are doing (like Greg, member here, screen name GPW). And that's going to be anywhere from $200.00 - $400.00 on top of the cost of the PC. Or like said above after you get the full system you can just get the ECU flashed. (place around here charges like $45.00)