actually denso iridiums are recommended by Neuspeed, DSR, TAP for their K04 kits

AHHHH GOTCHA....didnt know you were runnin a K04

Yeah a TT K04-25 biger compressor wheel and 40% larger exhaust exit.

King D

do you have a 1.8T?

what are you runnin?

hp?

T Pres

Right now i dont know. And im not gonna dyno it b/c if i do ill want to add more horsepower. the last time i got on a HP high my engine went chapter 11 on me.

Copper plugs are better for most all forced induction cars. Find you right temp and just get a good set of NGK's.


I have never heard of a performance shop suggesting platinums, let alone iridiums. More money than worth. They will last longer than the coppers, yes, but the price offset is enough to buy a couple at a time and run better all-around.

Copper plugs do make a better spark spark but their electrode is very larger meaning the spark will take longer to jump the gap.

With the 0.7mm iridium plugs and the MSD DIS-4 you get 7-10 sparks in the same amount of time for a copper plug to make one. thats why i run Iridium and MSD

Not sure why they provide iridium plugs.

While they last longer, they do not provide better spark. In addition, the extremely small size of the electrode results in poor heat transfer.

theyr'e meant to be fired multiple times

so i should rule of the bosch platinum 4's?