spark plugs

[nismoboy]

Ive searched through and it seem the ngk iridiums are thought to be the best plug to go for, but whet heat range do i need? im running 1.6 bar. Thanks

 

[youngsyp]

Most people use 8's if they are running 1 bar and above but, I'd be tempted to run 9's at that sort of boost !

 

[nismoboy]

Most people use 8's if they are running 1 bar and above but, I'd be tempted to run 9's at that sort of boost !

thats what i was thinking, just wondered what you guys running big boost use??

 

[ale]

i am using 9' s they have not let me down at thats after 6000 miles