BLK01S4

i am thinking about getting the Denso Iridium's
I know I should get the colder heat range, does anyone know the partnumber? Is it true I should go .004 smaller on the gap for every 50 HP?

denic992-- JAYHAWK

ik22 are the colder plugs. I run ik20's but i am stock. Also, you dont gap these plugs, they are gapped at the factory. If you read the receipt it should say "do not gap these plugs" (It may be because they could break easily, They have very small electrodes)

BLK01S4

What is the exact Partnumber then would i just ask for a ik22? Who sells them online .. All the auto chains down here don't carry what I need.

DarinS4Turbo

they require much less voltage to fire than traditional plugs of the same gap, therefore they don't follow the same rules for requiring less gap when adding more power (boost, nitrous).

BTW they *can* be gapped, but as Denic992 said there is a warning which is meant to keep people from 'gapping' by prying something against the electrode, because they do break more easily due to their tiny size. You can gap them though (carefully) if you wish with the proper gapper tool.

J.Moss@TorqueFactory

Does anyone have data to show that a colder plug has advantages?

dscottjr

ik22 is the p/n. Sold at sparkplug.com.

BLK01S4

Thanks guys.

BLK01S4

When you are running the amount of boost I am I would have to imagine they will do something..

dscottjr

Nanomousy

Stock ? Ok - so did you notice any difference after using the IK's ?