My 5.3L 2012 GMC Sierra before and after getting it custom tuned by Lew ([ Ссылка ]). It's a DiabloSport Trinity T1000 tuner. Kicks nice and hard during shifts now. Hit 120 MPH before having to let off. She could have kept going too. *Video was taken from the back seat behind the driver*

Performance upgrades:

TruckExhaustKits.com
2.25" Aluminized Steel Dual Exhaust Kit
Ebay.com
Flowmaster Super 40 Series Muffler
Dual Inlets 2.50", Dual Outlets 2.50"
AutoAnything.com,
K&N 77 Series Metal Intake Kit
Diablewtune.com
DiabloSport Trinity T1000 tuner

Check out these other videos of the truck:

Sound of before and after intake install:
[ Ссылка ]

K&N Cold Air Intake Installation:
[ Ссылка ]

Exhaust Sound Flyby's and Hard Acceleration:
[ Ссылка ]

Check out my Facebook page for behind the scenes stuff:
www.facebook.com/mncarguy

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