Is Denso Iridium still the best or NGK?

Im running K16 Hybrids with full bolts, RS coolers etc (non built engine)

620-700 crank bhp.


Also, a silly question. Should I change coil packs with every spark plug change?


Best


Si

 

I use the plugs my tuner recommends with my set-up. They are Denso's.

 

Denso for me too, no need to change coils so often

 

Denso PK20PR-P8 is what you will need.

They are great for stock power up to 700 hp.

Always refer to the tuner who tunes or will tune your car.

 

I think the best advice is to use what your tuner recommends. 1/2 for political reasons to keep your tuner happy, and 1/2 because they know what works best for their package.

That said, on Sambo's advice I run Beru FR6-LDU. This cured my issue of the spark blowing out under high boost. I take them out of the box and put them in as is. I measured them and I think one electrode is like .020 and one is .022/4. Seems like Beru runs a staggered gap on each plug /shurg.

I've put 5k miles on including some hard driving in autocross and I've yet to have a misfire. My last set of plugs Bosch FR6LDC gapped to .034 (recommendation from a popular tuner) started misfiring at 3500 miles. That's when I reached out to Sam.

 

I was told to not run irridiums because they are a bit weaker but last longer.

 

no difference btw the beru and the bosch fr6. pre-gapped out of the box. or fiddle with em to 027.

or if you really want to feel special use the oem 997.2 gt2rs fitment: Bosch FR-6-DPP-332 S