Thanks Todd....I don't mind spending the money on the Xcal Flasher and will at some point but not right now....I only have 3000 miles on the ST....I am changing things incrementally I changed the exhaust (got rid of the pre cat and muffler, changed to very low restriction type) and it is making a little more hp because I can get almost to the top of some hills I frequently travel before the trans downshifts, before the exhaust change it would shift about half way up! I travel a lot on I-95 between Fairfax and Fredericksburg, VA....about 150 miles a day, so I can evaluate improvements quickly....I'll report on them when I'm finished....I leave for GA Sat to visit my daughter at Moody, AFB....she is in Security Forces....anyway....I will have about 1500 overtheroad miles!....I'm not real comfortable with electronics controling the engine and trans....I guess I need to get over it!....oh yeah the sound of the new exhaust setup sounds just like my '95 Lightning, it growls....cc