The right spark plugs
May 15, 2011 | 05:49 AM
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From: Mansfield
The right spark plugs
Hi all
Am I right in thinking that the pfr7b's are the best spark plugs for my 05 sti running 340 bhp???
Many thanks
May 15, 2011 | 06:32 AM
Joined: Apr 2010
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From: West Mids
It's supposed to be 1 grade colder for every 50-100 horsepower increased from standard, as a general rule, so yes, i would say so.
May 15, 2011 | 06:42 AM
Thread Starter
Joined: Dec 2007
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From: Mansfield
Thanx tazz
May 15, 2011 | 06:47 AM
Joined: Apr 2010
Posts: 2,567
Likes: 0
From: West Mids
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