Its been a while sinc ei changed the plugs and developed a bit of rough running recently - plugs look like theyve had it. What is everyone using these days, im running standard boost currently but will be running upto 20psi area in near future.
The ones i have in now are ngk b8evx which i thought where correct? and been fine last couple years. I see mike/cgb list three
ngk br8eix
ngk b8eg
ngk b9eg