Exhaust Install and a wierd bucking...

[aplatz]

Just had a Banks Header, Catco hi-flow cat and dyno max cat-back exhaust installed and when cruising (not accelerating or coasting) I get a wierd bucking thing going on, It never happened before the install. If I step on the gas or let off it goes away. It happened at 50-60 mph, but seems it happens when your foot is on the gas just cruising.

I didn't do the install so I don't know what was removed in the process. Is something loose? The directions said to undo the motor mount (it is attached and seems ok. Should I detach the battery cables to reset the computer? Is this just a CSP, MAP sensor or TC vibe?

 

[Midnight Krawler]

Try resetting the computer first, there is a good chance this will correct it. If one of the sensors was unplugged it should throw a code.

 

[tealcherokee]

do you have a bored TB and/or cone filter, now that the engine is breathing better, maybe youre running a little lean?

just an idea