i got the superchip tuner. i put it on went up and put in the good gas and it drives much better. i don't have to give so much pedel to make her move. i tried the towing prog. and it felt like it lost power. i guess it takes hp and gives trq. i will find out when i tow my trailer again.

 

Very few people return them! The Superchips tuners are almost universaly liked.