Watch this if you have an LLY Duramax! I would say that one of the most important engine upgrades you can do to your Duramax is that I would remove the stock mouth piece to After market one. I went with S&B TurboMouth Piece, also know as the Turbo inlet
New turbo mouth piece will increase the air flow to the engine and decrease the chance of overheating issue that most LLY Duramax's have.


http://mictuning.com
"SAM59308678" at mictuning.com for 10% off all light bar in the store.

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Most Important LLY Duramax Mod!!!

2004 Duramax LLY
7-9" McGaughy's lift
20x12 Moto Metal
37x13.50 Cooper Discoverer STT PRO
5" Diamond Eye Exhaust
8" Tip

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Website: http://dealeroptionsinc.com/

Lift:
http://mcgaughys.com/

Wheels:
http://www.motometalwheels.com/

Tires:
http://us.coopertire.com/

Exhaust:
http://www.diamondeyeperformance.com

Light bar:
www.mictuning.com

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