Doug wrote:Hegg, boost cut would feel like the rev limiter -- )which is something you can go test if you've the balls!) -- it's an ABRUPT surge of slowing as the fuel is cut. The way you state misfiring is what I would tend to also term misfiring and that is not fuel cut. Misfiring could be due to old spark plugs, base timing off a tad, old spark plug leads, sticky injectors . . .
Yeah, that's what I initially thought. There's definitely not a jolt and I can keep driving mostly normal. I still have acceleration. My check engine light doesn't come on, either.
I have NGK Iridium plugs in there which are supposed to be .044 gap. I thought at first it was misfiring because the gap was too large (since the book says for some plugs it should be .032, and for others .044), so I shrunk the gap on all 4 down to .040. I've also done my timing twice to make sure it was dead on 16 degrees, which it is. New wires also installed (well, 10k miles ago).
If timing were the issue, the misfiring would mean it's a tad too far advanced, right? Maybe I'll retard it to 15 or 14 degrees and see if the problem is still exhibited.
Thanks again for the expert knowledge!
That's US gallons as well!
That's the most plausible explanation I've heard to explain the carefully squared exhaust section / squish. 
I've just been having a look at my old squished section and it is D shaped which approximates to a semicircle on top of a rectangular section. It is a lot wider than the standard 2" diameter and I estimate its csa is about 95% of the 2" pipe. Interestingly, just back from the cat is a narrowing which is ~1¾" diameter or 75% of the csa.
