Ok so I was interested in testing the E3 diamond fire spark plugs. I watched the videos that showed all the technical features and the spot on horsepower tv for them. These are supposed to be miracle plugs!
DO NOT WASTE TIME!
after about 50 miles I had loss of throttle response and at 3am in the cold had catastrophic power loss to where I had to pull off to the side of the road. Acted like there was no clutch! Could rev it in neutral and acted fine but.under torque it died out. had to wait five minutes before trying it again to where it worked. But constantly everyday in the cold it would start acting like it wasn't getting enough fuel and bogging down. So I put like 150.miles on these and tried a couple tests and after switching back to my NGKs everything ran fine! So for sure 100% these are a waste of time. I even emailed E3 to see what kind of response I would get. I'll keep you informed.