1g missfire

[93gtpeater]

So I have my car street tuned. Runs awesome at 23 pounds of boost. Iam running e85, scm 61, bc 272 cams, fmic, 255 walbro, fic 850s, and a 2g maf. Iam still on stock head studs and headgasket. So I cranked the boost up and took it for a spin. It holds at 26 psi but it starts to miss when it hits full boost. Once it goes past 23 psi it will start to miss. I dont know what it could be.

[asshanson]

Check your plugs? What are they gapped at?

[93gtpeater]

I checked them when I did my cams and they looked mint. I will check the gap tonight. What should I gap them too? What ever stock is?

[asshanson]

I'd go one step colder than stock and gap them quite a bit smaller. I'd say BPR7ES plugs gapped at .020 to start with. On my 2.3/Red setup I had to go down to .018 to hold 28psi on e85.

[93gtpeater]

I will go buy a set and gap them and go from there.

[way2fastalon]

some plug wires are gay and cause misfires