ecu

Hi everyone. I have to change out the ECU and BCM on my torrent. I have a parts car. I was just wondering if I should also swap the ignition cylinder lock as well? Would that make the computer and theft systems work or would I have to reprogram the keys doing the 30 min reset ?

Anyone know of where online I can buy a aftermarket ECU for my 98, 3.1L Grand prix. I want the Governor (Rev limiter) on the car thats set at 105 to be removed, and any Air/fuel ratio adjustments, timing, etc as well. I havent been able to find anything but these "performance chips" which I...