What plugs and gap.

My guess is maybe an o2 sensor died and it fatten up on one side. I had TR6s gapped .035". I am running 12# with meth injection. I was guessing it should make around 700rwhp but after only trapping 131 at the track I am either wrong on my guess or something isn't right with the car. What do yall recommend.
With that much hp, if you still have issues after you look into o2 possibilities, you might try the equivalent to a TR7 (TR7 isnt actually a number on the plug, but you can find the actual part number thru a search on here).




