Stealth Module - Chevy/GMC Duramax LMM 6.6L (2007-2010)The Stealth Module is a stand alone computer that plugs in under the hood. Our internal software meticulously works to optimize the factory injection pressure to amplify combustion efficiency. By bringing the fuel rail pressure to its desired pressure sooner it allows for finer fuel atomization and a more complete fuel burn. In turn, the engine receives better combustion quality, efficiency, and power output. Installation: Plugs in line to the fuel

the engine receives better combustion quality

The Stealth Module is a stand-alone computer that plugs in under the hood

If you need a replacement switch as well

This is for a replacement harness only

Chevy/GMC Duramax L5P 6

Results: Bottom-end power

Not compatible with preset modules

and power output

Installation: Plugs in-line to the fuel rail sensor

Switch has 4 modes (stock

If you have any questions about which version you have

It does not include a switch