i have a ninja. I will be going from 30% to 20% also from a p3 to a p4 plug. Should i take out the copper shim and just leave the silver one?


btw, it is almost impossible to get this darn thing up to temp no matter how much i lean it. I have just about fried one P/S set and i have another i am putting in that has been broke in.

My old one would run a 160 degrees at best. It is now fried because of being to lean.

Weird. And no the temp gun is not broken.

anyway, just some info on the shim. My tuning is not all that great.