Reviews of NGK spark plug

I'm currently is20 United 91 octane tune, APR packs and NGK RS7 plugs (one step colder thant oem), gapped at around 0,028'' and car feels solid. No misfire, no EPC. However it honestly feels just like when I was with oem coilpacks and plugs. Maybe now idle feels a little bit smoother.

I’m now running factory heat range NGK 94833 plugs gapped at 0.03 and the car runs so much cleaner.

I don't understand why you didn't just get the NGK iridium plugs.

I've ventured from NGKs and always go running back.

I did reduce the gap of the PFR7Bs to 0.025" when I was running DriverMotorsports K04+ tune and it boosted more than 26 psi. I did so due to upper rev stumbling, but for being back to running my GIAC HO K04 tune...0.028" works. PFR7B usually work great with higher boost from turbos and tunes when you do notice the stumbling for having arc disturbance.

It appears you already have a good set of coils, start with plugs, buy good ngk plugs. These engines eat plugs especially once you start throwing boost at them, I’m running one heat range colder than factory in mine right now after smoking a factory spec set but I’m pushing 20psi so your results may vary.

Running the ruthenium plugs. Works good for me FR6AHX-S (94279)

Definitely get NGK’s - the parts store I went with initially gave me other plugs and even with a new DIC the engine was still misfiring without NGK’s

NGK is prob the best sparkplug for performance, Denzo is a cheaper option but there not as good for performance

NGK literally welded a platinum bar to the ground electrode. Is it going to be really butt dyno noticeable? Probably not. But at least it should last at least twice as long as the BKR7E-IX, since I've noticed after 20,000 miles, my mpg goes to crap. The projected square platinum electrode means wear resistance on the ground electrode, like the factory laser platinum spark plugs (PFR7S8EG) having a platinum wear disc on the ground electrode.