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Old 01-25-2013, 07:53 AM   #70
KeeleDesign
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the larger exhaust tends to actualy quiet a vehicle down with louder low notes, instead of highs.

It will affect AFR, but in a good way, higher compression vehicles also tend to get better gas miliage due to more power being produced in the quenched area of combustion.
It's a trick mercadese and others have used for a long time, the downside, under full throttle 91-93 oct is required for full performance. although 87 is fins for idle and cruise.
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