I switched to the OEM plugs, and left the gap at .30 instead of .28 and ran them for a few months since the thread where I showed them all fouled for being 1 step colder .. My data logs now show a consistent +3 knock on launches. They may not foul but I am not entirely happy with them. Seems to cap my spark by a point or two which bugs me...
(caveat: I am too much of a perfectionist. I know the car can run 26-28 degrees so running 24-26 bugs me)
Have you checked the plugs since install? No codes in the PCM I take it? Checked the methanol setup, any kinks in the tubing/reason to suspect not spraying correctly? Does it matter which gas station you use?
Quote from: SHOdded on July 12, 2018, 12:48:53 AM
Have you checked the plugs since install? No codes in the PCM I take it? Checked the methanol setup, any kinks in the tubing/reason to suspect not spraying correctly? Does it matter which gas station you use?
yeah, I pulled the front three since they were the worst last time and they look almost new. Meth is good. flowing 550-ish ml seems on track with a .2 drop in STFT, where as before i was more -.15ish with the 375 nozzle .. i noted immediately after changing the plugs the spark loss, but have kept them in since it is a pita to change them for me.
if they don't crap out imma leavin' them in. i'm too old (tired/lazy) to be swapping plugs every 20k :P
Maybe you WOULD benefit from the 542s or regapping to 0.028. Whatcha gots to lose?
542s at .028 has worked well for me.....