100 cell hi flow cats + IPD Plenum - 6SpeedOnline - Porsche Forum and Luxury Car Resource

Jun 28, 2011 | 08:35 PM

C70Pete

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100 cell hi flow cats + IPD Plenum

will adding 100 cell hi-flo cats and IPD Plenum burn less fuel or more?

Jun 28, 2011 | 09:35 PM

jeneric996

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jeneric996 is infamous around these parts

I'm unsure if you'll notice any significant gain in gas mileage. After you get them, you may drive the car harder than before which would give you worse mileage.

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