Got the belt replaced this weekend, 730 was a tight fit but it was a fit. I took it out for a test run hoping to finally get to see what she could do. No more belt slip, but now it'* giving me the same type of high rpm misfiring I was getting a while back. I'm assuming its got to be the MSD coil packs again. I've got a brand new set of stock coil packs I'm going to swap in when I get it back out of the shop.

I've chewed through a couple stock coils over the years.... coil pack issues are easy to fix, but soooo annoying.

High speed misfire could be preignition. What kind of plugs are you running?

Oh snap..I breezed through that.

Only high rpm?
Yup..plugs like Dan said.

I was working on a supercharged Lotus and he had the same problem. A sputter at high RPM. I suggested colder plugs and the problem went away.

I'm running 103'*. Maybe too cold?

That is a bit cold, 104 would be better. I don't expect a cold plug to cause a stutter. Are you picking up any KR?

No KR , although I am running 10lbs through stock manifolds...

It'* possible your backing up in the exhaust.

I've been talking headers with Trent, and I'm liking the two piece design of the ZZP stainless headers. I should be able to have a set of headers delivered before the car comes back out of the shop.