Smooth Power Everywhere II

[Pterodactyl_imp]

On carburetor vehicles that I've owned, popping on engine deceleration was always due to a lean condition and fixed by fattening up a little.

This popping can also be caused by an exhaust "leak" in that on deceleration a low pressure in the headers will cause air (oxygen) to be sucked in through the gap/hole and then re-ignition can occur in the headers. This can occur at lean or rich mixture settings. CB4me, are your new headers perfectly sealed?

Cheers