[KingLT1]

Canned tunes are really a crap shoot. Some get lucky and the car runs OK on them...many are not as lucky and the car isn't happy. It's hard to supply a one size fits all tune when all cars vary to some degree. Custom tuning is almost always far better.

There will always be the select few that start doing research after the fact. Likely because they suspect the car isn't 100% where they want it, but they won't openly admit it...My advice to anybody with a stock fuel system canned tune SS running a supercharger would be to upgrade fuel system, put a flex sensor on it, and get it tuned properly. Run as much ethanol as the fuel system will allow and enjoy the car for years to come. It's not hard to mix...it is simply 2 transactions at the pump when you fuel up. Mix it 50/50 and you will be around E50 and likely have enough fuel system for it long as it's at least the LT4 fuel system and boost is kept around 8-9psi.