Which NGK TR6 plug is 1 colder than stock

[jason427]

Changing plugs out and wondering if anyone knows off hand which NGK plug would be ONE heat range colder.

Im thinking TR6, but not sure
Thanks,
Jason

 

[1tufgt]

TR6's

 

[FEARSNO1]

tr6's is right

 

[ShelbyGuy]

Does the GT500 come with 22s or 12s?

 

[svt boost]

why do we need colder plugs...where people seeing blowout?

 

[jason427]

Putting a Kenne Bell on, more boost. They say go one range colder.
Thanks,
Jason