Tonnuea cover & underdrive pulleys

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Tonnuea cover & underdrive pulleys

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Chevrolet Forum >> Chevy Trucks, Vans & SUV's >> Silverado >> Tonnuea cover & underdrive pulleys

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Tonnuea cover & underdrive pulleys - 2/27/2008 12:34:54 PM

bad2006z71

Posts: 80
Joined: 2/8/2008
Status: offline

Can anyone confirm better MPG with a tonnuea cover? i do mostly city driving so i cant see it helping much, though i do think it would look good.

also anyone have underdrive pulleys on? im looking at a set by asp racing that has an overdrive altenator pulley to keep the altenator charging at idle.

Currently pulling 13.5mpg with about 80% city driving, looking to squeeze a little more out of it.

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2006 Chevrolet Silverado Ext. Cab Z71, Silver, K&N 63 series intake, 40 series single in dual out Flowmaster, Line-x spray in bed liner.