difference between PFR 6B AND 7B spark plugs?
24 January 2007, 06:37 PM
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difference between PFR 6B AND 7B spark plugs?
difference between PFR 6B AND 7B spark plugs?
my99 classic uk turbo which is better and why
cheers mc
my99 classic uk turbo which is better and why
cheers mc
24 January 2007, 06:39 PM
#2
\m/ ^_^ \m/
it's the heat range, the 7B runs colder for hotter running engines, all depends how much you've done to your car, standard 6Bs are fine anywhere upto 300-330bhp
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