I have tried the Denso Iridium Plugs and have had good results.

What do you guys use ?

NGK PFR6B for standard style lumps or PFR7B for the higher tuned beasts.

Would anyone agree?

P.S. Just got me 4 x PFR7B for under £40!! :D

I have heard a few good things about them.

Would you suggest PFR7B for a MY98 WRX STi (JAP) ?

Good price too, where did ya get them ?

What gap would you suggest to use....






[Edited by waddy - 1/23/2003 6:06:17 PM]

0.7mm i think


Iain

I use HKS plugs.

I have read that if you have an import (i have) you should use these (might be sales talk?!).

The HKS plugs are Desno's rebadged.

I have seen it posted elsewhere that the HKS version of the iridium is a better spec than the Denso version - but this could be sales talk as the HKS is more expensive.

I have used both the HKS Iridium, which I used to get very cheap - under £50 for the set - but when that supply ran out I moved to PFR7Bs. These are gapped at 0.6mm - which is a bit tight - but running boost up to 1.7bar.

The Iridiums could be run with a much wider gap - 0.8mm at least and were very good. Subjectively I preferred the Iridiums - but I have no objective data to back it up - they are both good plugs.

For the really wild cars there is the extremely expensive PFR8bs! Not for everyday use methinks ;)

Trout :D

PS Car is an Sti V - and I have used the Iridiums on the car in both standard and modified form. The NGK only when it was modified.

[Edited by Trout - 1/23/2003 9:09:00 PM]

My car came with HKS plugs, once they were out and inspected I noticed Denso etched into the chrome Nut part of the plug. I bought NGK irridiums see below:
http://upload.turbosport.co.uk/getpi...2231188009.jpg

:) Theyre pretty good :)

Does anybody know where i could get a set of the NGK 7s cheap as i've got my service coming up and would like them changed.


Mel.

If you want the name/number of the company I got mine from email me at NCooper@slb.com

I use PFR6B gapped to 0.7mm in MY 93wrx ..runs sound.

Frank

DENSO Iridium Plugs 0.4mm!!!