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Old 11-16-2012   #12
Shane@DBPerformance
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Re: Does higher compression ratio raise TQ off boost?

Magnus was always big on designing his custom Ross pistons to try to take full advantage of the quench area.

Higher compression will add power/torque when not making boost or on an NA car, so it will make a car feel stronger during normal driving. Higher compression doesn't create more exhaust though, so it doesn't help spool a turbo faster, but it will make more power with less boost, so it can feel like it's spooling faster. As you go up in compression ratio, the gains become smaller and smaller though, so going from 8.0:1 to 9.0:1 is a much larger power gain than 12.0:1 to 13.0:1.
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