been having problem with my exhaust popping at idle, the car has to be fully warmed up, and it only does it at idle when i'm sitting at a redlight for awhile then pop like a shotgun. its starting to get embarassing now. it has to be sitting for at idle for a few minutes til it does. i have checked for exhaust leaks and vacum leaks with a smoke maching and found no leaks anything tuning wise that could fix this

 

I'm having the same problem as you are. So yes please help us, it's so embarassing...lol I have a MTI X-1 cam with a LS6 intake 3" exhaust if that helps. its 2000 Z28.

 

Cracked spark plug, intermittent ignition problem.

Usually will not do it running off idle because it fires more, at idle fuel builds up in the exhaust and that one spark that makes it to the plug lights it off.

 

HMM definatly a ignition problem. A spark plug is fouled out or 2 and kicking in every once in a while or the fuel vapor is making it to another cly

 

Thats what we were thinking, thanks i'm gonna change my plugs out tonight.

 

I had a burnt spark plug wire. Burnt right threw my MSD wire in cyd. #8.....replaced the wire & plugs & all better now ...thanjks for the help

 

lol same problem here, i had header boots over them so couldn't tell, and when i took the boots off had a broke wire boot