I was seeing the misfiring at 18psi+ but not below...and yes they had some idle time after the high power run, so its obviously not the best case to read plugs...it was never lean.

 

Don't know how much TR7's run, but I know the 6's are $2-3. I would give a set of those a try and read the plugs after a pull.

 

7s are the same price. I wouldnt run 6's with that much boost. Idk what causes it but I changed the plugs in a 03 or 04 bmw 325i after well over 100k miles on them and they were green as well

 

There is no "TR7", but the plugs I have are a "7" heat range copper plug by NGK, the BR7EF. I am going to try the 8 heat range next....but if the green strap is that common the misfire issue might be unrelated...

 

Keep us informed.
Im prolly gonna go buy some more TR6 when i change plugs before the boost goes up. I have some br7ef's in the shop too.

 

Yea may want to try the br8ef. Im curious if that helps. Im running br7ef but havent gotten over 14psi.

 

It's additives. Mine are green too

 

So has nothing to do with the meth? Would the fact I have run up to 50% e85 have anything to do with it?

Plugs 1 and 3 did not show this...

 

I run E85 and I see green on the plug something.

 

Makes me want to pull the plugs in my other truck to see what they look like...