Spark Plugs
09 January 2011, 12:50 AM
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Spark Plugs
MY03 STI UK PPP
Do I just use standard plugs or do I use one or two grades colder ?
09 January 2011, 12:58 AM
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Quote:
Originally Posted by
topman2180
MY03 STI UK PPP
Do I just use standard plugs or do I use one or two grades colder ?
You won't go wrong with NGK PFRB-7's mate
09 January 2011, 02:54 AM
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Yep, second that. But beware that some Subaru servcing/dealers won't fit them as I found out after buying some to be fitted. In the end they fitted pfrb-6's as the pfrb-7s were not approved items :-( If doing it yourself then go for it. Currentl;y run the pfrb-7s in my Daihatsu YRV Turbo and they are very good :-)
09 January 2011, 07:13 AM
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09 January 2011, 08:09 AM
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6's are good enough for the PPP'd cars, even the wr1 runs 6's
Only the JDM twin scroll STI runs 7's as standard.
Tony
09 January 2011, 09:32 AM
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Whats the benefit of 7 over 6 they is only a small difference in the price .
09 January 2011, 09:34 AM
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7 is a cooler plug, for mildly modified engines.
09 January 2011, 01:22 PM
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What sort of power would you start to use the 7's over 6's? For about 330bhp should you use 7?
09 January 2011, 02:13 PM
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I had 6's in my 2002 UK STi and at 335hp, they started to fail. Put 7's in and job sorted.
09 January 2011, 02:14 PM
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Should have added, you can put PFR7B plugs in a standard car so just stick em in, they worked fine for me right up to 430hp.
10 January 2011, 07:36 PM
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Where is the best place to get a set of the PFR7B's?
10 January 2011, 08:11 PM
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I got mine off eBay. Arrive fine.
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