I was running them back wheni was spraying they only lasted about 10k miles. but they has about 900-1000 miles worth of nitrous on them

 

This thread is a bit old, but I just checked my TR6's installed last Easter. Someone else installed the plugs, but I'm pretty sure they weren't gapped. If they were, then ???

Anyway, the gaps ranged from .03-.055 after about 9000 miles. I re-gapped them to .035 and re-installed them.

 

tr 6's gapped at .038 spraying 150 shot, no problems, even fixed the rough idle on the tr55's?

 

I just put mine in, they improved my gas mileage, made my car run better, idle better and more power. I went from stock to TR6's as i plan to spray a 100 shot in the future. Mods are just Lid/PPTB/LS6/EdelbrockLT's/ORY/Hookercatback and she runs like a champ