Just changed them from PFR6B to PFR7B. Old ones had 16000 miles, and were regapped about 1000 miles ago which fixed a hesitation. Maybe I am as susceptible to placebo as everyone else, but it does start better, idle smoother and on boost is considerably nicer overall.

Found an interesting link to diagnosing spark plugs from Ravensblade - mine were like "normal" except orange coating all over from NF - I take it this does no harm - also saw it in my exhaust when running double on a track day.

http://www.ravensblade-impreza.com/t...ark/spark.html

 

John
Can you tell me where you got your 7`s and how much?
Ta! JohnD

 

I get my 7's from Town End Garage - £35.00 + VAT

www.townendgarage.co.uk.

01524 733837.

Hope this helps,

Impreza Babe.

 

Falkland - similar price IIRC.

 

What gap did you set the plugs to john
ssubaru

 

0.7mm - came at 0.8mm

 

Thanks john
ssubaru

 

Thanks John `n Babe
JohnD