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dbrog28301 -> Has anyone replaced stock plugs with denso iridium plugs (5/21/2007 7:48:54 PM)
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I have 2004 colorado crew with the 3.5l and 34k miles. I have the True flow intake and filter as well as a Magnaflow exhaust. I see some posted complaints of a rough idle. Adding the Intake and filter fixed my trucks rough idle and smothed out the engine bi time! I get 25+MPG freeway and much more power! I have been thinking of replacing the stock platinums with the Denso ITV16 iridium plugs. I have done so in my two Saturns and a VW Jetta and got better mileage and performace. I just pulled them out to look at them on the 1995 saturn after 45K miles and they look like new. Dirk
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