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precision vs turbonetics? anybody done a comparison on the dyno

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Old 10-10-2011, 11:25 AM
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Originally Posted by onfire
I'll add come confusing tests to the mix....

Turbonetics TC7668"s with the small 60 series covers ran 155mph at ~ 21psi.

Put on a set of Turbonetics hp7668's with the S cover and ran the same.

The cut down 60 series covers don't kill power as much as you would think.

The 68mm turbine is the limiter...
Yes the turbine is a limit. But as the pressure rises the covers will make a big difference. Right now sharing the load in twins the turbos aren't working real hard so that does help the efficiency quite a bit. The new TC7676 is going to be stupid awesome in comparison, that is for sure.



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