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So exhaust leak?

Deathtrap, since you're down so much on power, you could have clogged cats. Did you pull the O2s to release some pressure to see if it ran any better?

rkneeshaw, I realized that you had clutch...

I got a quality OTC leak down tester off Amazon for around $60. Proved to me that the cold engine miss in my family's 90 Cadillac wasn't a mechanical issue. Almost zero leak down on the cylinder with...

Man I was going to suggest all new coils.

Assuming everything else is good, what about a little extra carbon build up in that cylinder that is causing a hot spot, throwing the DME into a fit?
...

Oh, so you solved your problem. And it was electrical related (or so you think) to that bad wiring repair. Interesting.

Edit: just read your E46F post. 144k miles.

How about a leak down test?

Possible valve float going on at that high RPM due to a weak valve spring?

Very coincidental about the clutch...