Executive order
D-503
TST Products, Inc.
Vehicle applications
No vehicle applications were preserved for this order.
Part records
| Part number | Model/specification | Modification | Remarks |
|---|---|---|---|
| PowerMax, PowerMax 2, & PowerMax | 1998 ?¢ and 1999 Dodge Ram Trucks equipped with the 5.9L ISB Cummins Turbo Diesel engine | The PowerMax Computers includes the following main parts: PowerMax Control Computer, boost altering bleed orifice or spring, and wiring harnesses. The PowerMax Computer is mounted under the vehicle's dashboard and has no user adjustments except for an on-off switch. Engine performance modifications include increasing the fuel delivery and modifying the turbo wastegate during boost conditions. An increase in fuel delivery is achieved by an increase in the fuel pulse width during high loads and wide open throttle conditions. The following is the maximum increase in fuel pulse width with the corresponding Powermax model: 20% on the PowerMax, 30% on the PowerMax 2, and 50% on the PowerMax 3. |