I was really hoping thatsomeone could help me out. I have an 06 Mustang GT with a JLT CAI, Mac mufflers and an SCT excal2 tuner. I bought the tuner and CAI from Evolution Performance as a package deal and they installed three tunes: 87, 91 & 93 Octance tunes. Now don't get me wrong, I noticed a big difference after installing everything and puggling in the 93 tune. Now this is the prob. It doesn't matter what tunes(87,91,93) I use or fuel(Sunoco, Shell, BP, etc...) Whenever I hit the gas WOT the car falls on it's face for about 1 second and then decides to take off. Even if your cruising at 40 MPH and downshift and hit WOT it does the same thing. Do you know what can be causing that?The carnever did it when it was stock. Any help would be greatly appreciated! Thanks so much!!!

 

Personally I would check the CAI to make sure it's snug on,I know for me it took me a bit to get it nice and tight whereI want it