03-31-2006, 12:04 AM
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#3 |
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3" Exhaust
Join Date: Sep 2005
Posts: 238
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Iridium is better, and there are two types available. IF you go to Supra sport they sell both the difference is;
to quote Charles Britz of SupraSport.com "The difference is in the heat range. BCPR5EIX11 3306 is a hotter plug meaning that there is more electrode exposed. You can use this plug with basic performance upgrades but when turning up the boost the BCPR6EIX 5689 is a better choice because it is colder. With the higher temperatures with a turbo charged engine could cause the hotter plug to fail or cause preignition." |
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