Well now...in an effort to find an explanation for the decel popping I went over every connection in the exhaust from the heads to the silencers, & here's what I found:
- port side header nuts were tight
- starboard side header nuts weren't loose, but were not as snug as they should have been
- crossover clamp was loose
- silencer clamps were tight & sealed with hi-temp copper Permatex
The proof will be in the riding, however I think I found the source of the exhaust air leak at the crossover connection that caused the excessive decel popping.
My theory is that all the detonation going on in the right pipe from the ignition sensor failure either caused or hastened the loosening of the crossover clamp & maybe even the starboard side header nuts.
I'll test it out tomorrow, weather & time permitting.
