vid with a rev would help. hold it at 2500 rpm, then let it drop to idle.
could be a exhaust leak too. look for a black soot covered flange off the headers to heads, or the cross over and such.
sea foam would show it if you cant seem to find a leak area.
I'll try to grab a video tomorrow if my brother is free for a bit. I'm almost positive that I have zero exhaust leaks but I won't rule that out. Flanges are clean as a whistle.
Squirrels are my engine. I need a Ford Regal
04 Comp G.