I can't find anything on the correct spark plugs to use on a stage 1 JCW with the N18 motor. Any insight from the group? I'm trying to do some basic maintence since my car has low miles but is coming up on 5 years old and could use an overhaul but I can't find anything relating to the N18.

Should I be replacing with the stock Beru's, or go with a colder temp range since I have the tuning kit?

 

I'd go with NGK ILKR8E6 Spark Plugs

These are colder than stock.

 

Ditto. Same plugs found in be Mitsubshi EVO.

mQubed Motorsport, Manic Tuning Dealer

 

Also, I gap them to 0.6 mm.

 

Thanks for the tips on the NGK's. I didn't realize that hey made an NGK that fit the N18. I couldn't find anything on them for the life of me. Only the stock Beru's or Champions came up in my searches.

Any inaight on why such large gapping compared to stock?

 

0.6mm is smaller than stock. I think stock gap is closer to 0.8mm

 

Sorry. I had a brain fart/senior moment. I was thinking of the gap in inches and paying no attention to decimal places or the fact that you clearly had stated mm's. You're absolutely right on the stock gapping. Thanks again.