I haven't done anything with any tuning yet. I've been worried about screwing with the warranty, and found out that Ford Racing sells a pack, with a K&N air filter, mufflers, and a Ford Racing tune. I ordered one of those and will have it installed at my dealer. That is the only tune that Ford will warranty. Any others, if possibly the cause of trouble, will void warranty.

My master plan is to race for the next five years and not spend a single penny on a broken part, using my Ford dealer as my crew and "sponsor".