E85 Spark Plug read

[TT_99Cobra]

Hey guys. Been working on tuning my twin turbo cobra and hoping to get a little feedback on these plugs. NGK BR7EF’s, e85, 15psi and 17 degrees timing. #8 seems to be much cleaner than the rest. I’m still educating myself on reading E85 plugs, so I’m not quite sure what to think of these.

These had 3 quick pulls and a little street driving on them.

Any input is appreciated.

 

[q6543]

Timing on the the strap is tame, you could definitely sneak up on some more power at the track or doing dragy hits.

You’ll need to cut the threads to see the fuel ring but on E85 it’s tough to get pics of, like a light ghost pencil ring on the base of the ceramic is what you’re looking for.

Apple to orange combo but on my street E85 I come into boost at 28* I don’t start pulling timing until 3-5 psi and then I pull .7-.8/lb, I’d bet you could sneak up to 20* pretty easy