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when i get your turbo i also play on getting new pistons and rods what compression ratio will best fit you app. im looking for 290/300 whp. thanks
 

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Umm... from what i remember, tom recommends 9:0:1 or 9.5:1 with that HP level. Of course I'm kind of buzzing, so memory could be failing me.
 

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I would keep the compression no less than 8.7 no more than 9.0 for a daily driver this will be low enough to run pump gas on a lower setting and high enough to reach 300 with room left on the turbo that will spool quickly

Tom
 
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