I have a 2.4 on 10:1 compression 6bolt with 1g ported head awd. Just switched over to e85. I was previously on pump gas or 110 leaded race gas, i was using BR8ES for plugs. Is this still the plug i should start with or should i try something else. The car has an hx40 and at 32psi link estimates hp at 650, gonna turn it up to see if i can max the turbo out. I have to close the gap way down to prevent spark blow out even though i have coils that aren't more than a year old and an MSD box. I see people claming they are running close to .022 gap but i can't run nearly that unless i turn the boost way down. Wondering if this could be a plug issue.

I ran at 33psi with BR7s, conservative timing and around a 12:1 afr. Gap was low, about .018 to .020
Was told run hotter plugs with e85. Maybe try some EDIT 6s? Non projected is good as well, you are on that i see.

I run 30psi with some spikes to about 33 on E85. I've had no problems with the non projected 8s (br8es) gapped at .014. I am using the stock ignition with the biggest wire Taylor offers for dsm's.

I have my gap on .013 to .014. Kinda thought i could have a bit more gap with the msd dis but looks like you and I are very close. I have msd wires as well. 12:1 afr with my timing unchanged from pump gas so like 5 degrees at peak torque and raises to 9

Wow, I never thought of gapping my plugs that tight. I am experiencing spark blowout when I turn the boost up to 30 psi. When I am only at 26 psi it runs great. I have br8es gapped to 0.018 so after seeing this thread I am going to try gapping them a bit tighter. I am also just on new stock ngk wires but I have bigger Taylor wires being delivered tomorrow. Hopefully these things will fix my issue!

I am having same issues with my HX40 setup, 10:1 compression on a 2.0 liter on stock coil and new NGK wires with plugs gapped at .022 so I am going to try the much smaller gap and see if it helps me too. I am still on 110 blended with 91 but soon switching to E-85. We seem to all be in the same boat, when I run 30 psi, it runs great....until spark blowout (I assume as everything else is working fine). Tagging this thread to see what else comes up.

Gap them down. .018 or so. Make sure your wires are new and clean. Also make sure your coils are clean.

Glad to see that i'm not the only one. I almost decided to buy new wires and a brand new msd dis , may still do the wires but probably hold of on the msd, unless i can't get to 40psi.

Use some dielectric grease on the wires too. I had a car at the shop that kept getting black buildup in the #1 wire at the coil. Ran like crap at WOT. Don't know if the wire wasn't sealing right or just had a bad spark but the guy said it would build up every few weeks. New coil and wires fixed it for good though.