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Old 12-26-2005   #2
Kevin
 
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Join Date: Jun 2005
Location: pittsburgh
Posts: 4,624
Default Re: whats the diff between 90(375) &92(405)

The hp bump didn't come untill 93. Modifications to the cylinder heads and valvetrain; platinum-tipped spark plugs, and the exclusive use of synthetic oil were among the upgrades that brought this about. In addition, an electrical, linear exhaust gas recirculation system improved emissions control.
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