I have a 2012 SG and decided to replace the stock exhaust. I installed a set of Rush Big Louies and their true dual headers. I also got the FuelMoto AC and a PCV with map preloaded.

I'm getting quite a bit of decel pop from the right side muffler only. Anything above 2k rpm is doing it. I've checked everything I can think of for leaks to no avail. I've held a flame up to each joint..I've done the smoke test...I replaced the gaskets when I changed it.

I've talked to FM a lot and changed fuel values at 0% and even changed the ignition values at 0%. None of it even affected the decel pop which tells me there has to be a leak somewhere. Any suggestions?

 

Intake leak, exhaust leak or in need of tuning.

 

I'd guess map is setup for baffles but you removed them. So you need something like BCT's to give you back a little back pressure while still giving you the noise level you want. If you left baffles in then it's exactly like Dawg said.

 

Option: enjoy it.