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Old 26 January 2015, 08:21 PM
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dal c
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Hi sorry if this has been asked before but im new to the site,i am going to change the plugs on my scooby and would like to know the best spark plugs to use my car is a 2005 wrx running 320 bhp at the moment
Old 26 January 2015, 08:31 PM
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STI8Dave
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I would put NGK PFR7B's in if it was me.
Old 27 January 2015, 12:06 AM
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bludgod
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i think at that power level your boderline between 6's and 7's. Probably best to go with the 7's
Old 27 January 2015, 10:39 PM
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dal c
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Default spark plugs

thanks guys will go for the sevens do you know the best plug gap as ive been told that gapping them slightly bigger would be better as it creates a bigger spark which will help
Old 27 January 2015, 11:53 PM
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http://forums.nasioc.com/forums/showthread.php?t=518633

everything you could ever dream of about plugs. Basically a bigger gap will stress you coils and it's more likely to be blown out under high boost pressure. Stick to the standard gap and you'll be grand!
Old 28 January 2015, 10:12 PM
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dal c
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thanks very much for your help
Old 29 January 2015, 08:33 AM
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AS Performance
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generally speaking 0.7mm gap or if its high boost then potentially 0.65mm
Old 29 January 2015, 09:19 PM
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STI8Dave
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Originally Posted by AS Performance
generally speaking 0.7mm gap or if its high boost then potentially 0.65mm
Handy bit of info that
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