silverbacktt

anyone using iridium plugs time for a tune-up any brand recomended I've gotten great advice from you tt freaks and yes i am a tt freak...thanks for the help.

AxeYrCat

I ran Denso IK22's for a while, and Schwing does currently. Work great. =)

TTschwing

IK20's if you're stock. Seem to work great. Little write-up in Car and Driver this month about why Iridiums are better for Highly tuned, Boosted cars....

Rawhide Rosenwad

Schwing's on the money, but that write up is in Road and Track.

TTschwing

better photo's of the new C6 in C&D. Plug comments were in the tech section toward the rear I believe..

Rawhide Rosenwad

That C6 is looking more and more like the buy of the century.

CusTTom "Quag" WesTT

need to be replaced more often, but a better conductor... and the first thing to bite it in the event of a meltdown.

gesTTalt

It's the copper equivalent of the IK22 (heat range). Copper is a better conductor, but does wear out faster - meaning you'll you have to change your plugs sooner (~15-20k). This is oem for Porsche 993s.

Copper
Thermal Conductivity W/(m·K)= 384
Electrical Conductivity MS/m = 57

Iridium
Thermal Conductivity = 147
Electrical Conductivity = 20

Silver would the best conductor at 407/66; Gold (310/45) is slighty less than copper. Platium is only 70/10.

DerTT

Does a chip, k&n panel and exhaust count as breathed on a little?

DerTT

Do the IK20's and IK22's need manual gapping (single prong)?