I just got my Comptech headers and exhaust installed, and I was paying super-close attention to everything that happened on the way home. I noticed that sometimes, especially when I'm trying to make it do it at a stop and idling around 2000 rpm, my engine will pop and about a second or two my interior lights will dim momentarily. It is not a loud pop, like a backfire like you see on old muscle cars in the movies but rather a soft pop not even as loud as a good snap of the fingers.

What's going on? Please tell me!

Ben

 

headers and exhausts make cars run a little lean because of lower backpressure, Mine does the same thing sometimes. Just get an adjustable FPR and turn it up a few pounds.

 

mine does the same thing and all i have is a 2.25 exhaust. I kinda like the pop!