I just installed a Magnaflow SIDO set up and the AirForce1 intake.

Sounds great runs great. I now get a vibration in the brake pedal at a stop when the truck is in gear. If I drop it to nuetral, the vibration stops. any ideas???

 

Best guess is some kinda of low frequency drone from the new muffler. Doesn't do it in neutral beacuse its not under load, hence less exhaust pressure.

 

Thanks SVT I'll try to check that out.

 

What is the size of the AF1 intake you're running? If it's the 3.5" then you need custom tuning to account for all that new air.

If it is the 3.5" and you DON'T have custom tuning then you should remove the thing until you do get tunes. It's harming your engine.

 

It's the 3 inch that was recommended because it didn't need a custom tune.

 

This is the exact thing im haveing right now but my truck is 12 hours old and no mods if some one comes up with something please post it, ya ill be at the dealer abought in in the morning.

 

Well Like i had posted i have the same symtoms with the stk pipes and a truck that is three days old. I took it to the dealer today and they can not find any thing wrong so now what ?