[Topless in Cali]

Mike,
I replied to your emial, but in all truthfullness, the iridium plugs are WAY better than the NGK copper or Champs. The Denso ITV 20 or the NGK iridium 2315's are just a truly superior plug.(both one step colder than stock) I tested my stock plugs v.s. NGK 4306 copper v.s. Denso ITV 16's and the Denso's just blow away those plugs. And the 16's are the same heat range as stock. I ordered the ITV22(2 steps colder) for my S1/WGA/BC set-up. A lot of guys running big turbos are using the iridiums.