Would I be right in using PFR6B plugs gapped to 0.7mm for my 93 WRX? It is pretty much standard except for TSL backbox. I would have a ScoobyECU too but for the fact I have been waiting since April for a reply

Many thanks for any help to confirm this.

Mitch

 

Yip that would be correct. If you have a more highly modded car running more boost or an sti i would say use the PFR7B's and perhaps even gapped to 0.6mm.

Hope that helps

Stuart

 

It does indeed.

Thanks Stuart.

 

I have a 94WRX with a VOS CHIP fitted,(Ausy equivalent to the scoobyecu)

I have NGK PFR6's set to .08 and note sure if I should either lower the gap or change plugs to NGK PFR7's as the boost has increased to 16PSI

What the best option here..

thanks

Mark.

 

i'd be interested in an answer to this post as i have a similar setup. i have pfr6b's gapped to 0.8 running 15.5 psi with a scott t chip which again is similar to scoobyecu. also have full decat exhaust.

rob

 

I have just bought some Denso Plugs(PK22PR8) which are a direct cross referenece to NGK PFR7's, but i guess are the JAP preferred plug.


Any comments on this plug gap...

JDM WRX. Do you have a Wagon?.

My Wagon as well as having VOS CHIP also has a scooby sport back box, a TSL decat center section and a K & N induction kit. All seems to make a good set up. I really need to get a boost gauge now to see what is happening. Possibly a knock link also

cheers

Mark.

 

0.7mm plug gap seems to be the optimum
The knocklink is imperative imho when raising the boost over standard

Cheers

 

hi, no i have a saloon. it made 266 bhp on clive atthowe rollers but that was without scott t chip. i'm a bit concerned about the plugs though, also i would agree with delboy about the knocklink, well worth getting. it has helped me out on many occassions and never been wrong. rob