I finally got around to buying some bolt on parts for my 2002 S281 N/A. This weekend i am installing a magnaflow catted x pipe, accufab 75mm TB/plenum. I was thinking about getting an XCAL 2 hand tuner since they can read the stock saleen tune. How good is the saleen tune? I mean, is it worth it to get a tuner for $380 so i can max out the performace or is the saleen tune decent enough to where i wont notice anything. I know they have a slight advance in timing and a 91 octane tune. How much farther can i go with the timing safely, and then with a 93 octane tune, what kind of HP gains will i get, if any, from the handheld? Plus, i'm not too familiar what other parameters you can mess with and if it will help out with maxing out the HP from the tune. Any help would be great.