A friend of mine has a 2.2 1995 cavy, and from how he explained it to me is, the car will run but, it has major backfire coming through the cold air intake! What would cause this, possibly timing? I have no clue. Anybody with an answer, please!!!!!! Oh, I don't know if this matters but, he has a 4-2-1 header and straight exhaust back to the muffler. Please help. Thanks guys.

Watch out there nah!