GMT K2xx Trucks General Discussion 2014+ Trucks | General Discussion

Under Drive Pulley

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Old Jul 19, 2015 | 01:49 PM
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Default Under Drive Pulley

Amazon.com: UPD 2014 Chevrolet and GM Truck Underdrive Crank Pulley: Automotive Amazon.com: UPD 2014 Chevrolet and GM Truck Underdrive Crank Pulley: Automotive

Anyone running one on the Gen V motor or know of any feedback?
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Old Jul 19, 2015 | 04:58 PM
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I have one on my truck and doesn't do anything
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Old Jul 21, 2015 | 04:55 PM
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Originally Posted by cammed00
I have one on my truck and doesn't do anything
LOL only thing it did for my old 99 was make it overheat in traffic. (but only idling still for 2 hours straight kinda traffic.)
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Old Jul 21, 2015 | 04:57 PM
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if this " and increase mileage by 1.5-2 MPG"off of that amazon add is true it might be worth a try.
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Old Jul 21, 2015 | 05:23 PM
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IF that magic bean actually truly did something other than waste money, EVERYONE would run them.



New thread.

"JUst bought a 5.3 truck, need more power, How?"

Standard response would be , "CAI, headers, exhaust, UD Pulley, Tune".

That doesn't happen.

What does is this, 100x daily, "CAI, headers, exhaust, Tune"



/End thread..

Last edited by ezdaar; Jul 21, 2015 at 05:30 PM.
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Old Jul 21, 2015 | 05:48 PM
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You can leave cai off if you wanna be totally honest...
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Old Jul 25, 2015 | 05:13 PM
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And dat's da name of dat tune!

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Old Jul 28, 2015 | 12:56 AM
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The only thing I could see as an advantage is the lighter weight allowing the engine to rev quicker, however in this case it is most likely negligable
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