2004-2006 Chevrolet/GMC LLY/LBZ Duramax Turbo Kit BD Supermax Turbocharger

Pre-Installation
A turbocharger is driven solely on exhaust energy. Therefore, if the vehicles current exhaust manifold is cracked or is leaking, it is recommend that new exhaust gaskets and a heavy-duty exhaust manifold be used.
Installation should occur on a cold vehicle, as turbo and exhaust components become very hot with use.
The BD SuperMax Turbocharger System is recommended for trucks with 400-550 RWHP with a maximum efficient boost pressure of 45psi. For optimum performance, the turbo should operate between 40–45psi. Greater boost pressure is a function of the amount of fuel that is being fed to the engine. The adjustable wastegate should be tuned based on power level.
Record your radio settings if you prefer as you will lose them once your batteries are disconnected.
Disconnect the negative terminals on both of the vehicle’s batteries, and then
disconnect the positive terminals.
If the stock turbocharger has failed, perform the following steps to verify the condition of the #4 camshaft. Although this oil feed does not supply the BD turbo, it is always recommended to check the state of your engine.
A. Visually inspect for correct alignment of the #4 camshaft bearing oil hole through the turbocharger oil supply hole in the block.
B. Turn the engine over by hand (1/2 turn) and inspect for camshaft bearing movement, indicating a spun camshaft bearing.
C. If the bearing is spun the engine MUST be replaced.

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