This is a Stealth Performance Module designed for diesel trucks. • This standalone computer plugs under the hood to optimize injection pressure, which can improve throttle response and reduce turbo lag. • It is often marketed as a "warranty safe" upgrade because it does not reflash the truck's main computer (ECM). • The module works by changing the values coming from boost and fuel pressure sensors before they reach the engine's ECM. • Users sometimes report improved fuel mileage, typically in the range of 3 to 5 MPG, depending on driving habits and conditions.

Asking $300 OBO

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