I have the SCT Xcal 2 for my '04 Tbird, its great and I would never go back. Besides the increased performance it firms up the shifts and removes or raises the rev limits and raises your shift points

You just plug it in to your OBDII port, down load your factory settings to save them then upload your performance program, all in about 3 or 4 minutes, well worth the money. Also,you download the performance program and reload the factory when you need to take it to the dealer for service.

 

It wouldn't be so bad if they didn't charge you $50 for the updates when everyone else is free. I think that KRC is kind of over charging. Maybe it's just me. I wouldn't buy it from them.

 

marty is kinda high in price, most programmers for the other trucks (chevy, ford) run about 450.00