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Old Jan 26, 2015 | 08:21 PM
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dal c
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From: benfleet essex
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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
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Old Jan 26, 2015 | 08:31 PM
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I would put NGK PFR7B's in if it was me.
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Old Jan 27, 2015 | 12:06 AM
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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
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Old Jan 27, 2015 | 10:39 PM
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From: benfleet essex
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
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Old Jan 27, 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!
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Old Jan 28, 2015 | 10:12 PM
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thanks very much for your help
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Old Jan 29, 2015 | 08:33 AM
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generally speaking 0.7mm gap or if its high boost then potentially 0.65mm
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Old Jan 29, 2015 | 09:19 PM
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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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