Went to the track this weekend and had her popping and making noise like a popcorn maker at the movies (on deceleration). No trouble accelerating or running at idle.

I have full Akra, Rottweiler, Akra map. PCV is not an option for me. Perhaps the fueling dongles, but do I need them?

Thank you kindly for your help

SAS still on? It injects cold air to burn off any unburnt fuel as it exits the exhaust.

You can turn it off via tune ECU.