what plug gap for 12-14psi ?

[vortech gt]

stock ignition with msd coil packs and motorsport 9mm wires
i currently run.035 but my last dyno the power fell off and it was still making boost and the A/F went rich around 5800rpms,the graph aslo got choppy.could this be spark blowout ?

 

[lastmanstanding]

I run stock ignition, Autolite 103 plugs gaped at .030inch, 19.5psi 598rwhp. Never had a problem. Dyno pull is clean all the way to 6200-6300rpms

 

[vortech gt]

i close up the gap to .30,will see what happens

 

[KLeech]

i close up the gap to .30,will see what happens

That's what I was going to suggest from .032-.030 and see what worked the best.