Time to change them. A lot of evo owners around here said do NGK thats it. I could not find them for my car at local shops so I have to get them online. Anyone know where to order them from and which ones to get, I have a full exhaust, manifold, intake, greddy fmic, stock boost 17psi, untuned (for now).

 

NGK is all i use in my cars, and i just go with copper plugs. For you i would suggest BPR7ES. This place has them the cheapest ive seen
http://www.rockauto.com/catalog/raframecatalog.php

The part # you want is 2023

 

Keep in mind you will need to change your plugs out around ever oil change or every 2 oil changes

 

just curious, why not get the platinum or iridium?

 

They simply don't run well with the 4g63. They are also a retarded rip off.

 

$2 a plug is hard to argue with. Even if they only last like 3k miles

 

Like $3k? lol

 

3k miles, Not $3k. You know what I meant

 

Cool I'm going to get them today. Thanjs for the help

 

are you sure thats the right part number? when I clicked it it says "Yamaha" and it has a bunch of different years. hmm......