Had this issue since I had the xede running. When i warmup the car at cold temps, the exhaust sounds like its coughing every 5-10 seconds but goes away it is fully warmed up. It sounds like bursts of air is puffing out the exhaust, kinda sounds like a deep "poof". Just wondering if anyone is having this problem.

 

i think mine had that symptom when it was completely stock as well. probably normal

 

I think I know what you mean... it's like a random misfire type sound at idle. Almost like it's skipping a beat. I had it when I was stock and I have it now with Stage 0+. Wouldn't worry about it.

 

Thanks, I figured it was okay. It happened with both the stage0 and stage0+downpipe map so I assumed it was normal.