ECM reprograming
I'm far from an expert but I don't think your old PCM can be programed to run a motor with a 58X reluctor. It's either change the reluctor to 24X or get the newer PCM/VCM/ECU. Hopefully someone who knows the facts will confirm this.
Originally Posted by jvrwong
Thanks, I would change it out but everything is already bolted in. Where should I start looking to see if I could find a converter out on the market?
Call or email John at Speartech and buy an LS2 wiring harness, VCM and fly by wire throttle pedal and you're home free, well not quite free, but you'll get the job done. I think the LS2 has a fly by wire throttle body, doesn't it?

