Mechanics wise all I've done for my 2007 SC is add the Injen air intake and Magnaflow exhaust, mostly for the sound improvements...which have been a terrific improvement.

This 2007 is in a warm state, Florida. My 2004 SC, which also has the Injen, is back in New Jersey and if/when it snows I think the Magnaflow might hang down too low. top not get ripped up. For that one I might just experiment with the stock exhaust, pull the rear most muffler, if its not too loud to do so.

Performance wise who has suggestions regarding one of the electronic throttle systems I've read about but don't know much about? Seems like a reasonably priced investment to give car more "kick" when desired. I tried the search function but nothing specific came up, assuming I did so correctly

Thanks