Second Pump Patch

Use the Evo's passive wastegate solenoid wiring to control a secondary fuel pump by the ECU.

Licenses Downloads

Purchase Options


Bundle with Wiring

Purchase a bundle that includes the wiring, plug and play connector, and license!


Learn More


License Only

Want to DIY your own wiring? No problem, just purchase the license.


Learn More


This patch allows the stock Evo X ECU to control, by use of a relay, a secondary fuel pump. The pump is turned on and off by engine Load, similar to how the main fuel pump switches between low and high voltage.


When the car is off, or is cranking, you can manually turn on the second pump by pressing and holding the cruise control's Decel/Set button. This feature is disabled once the car is running.

Visual Indication

The intercooler sprayer light will illuminate when the second fuel pump is running to provide visual feedback. Note: This feature can be disabled if the intercooler sprayer is actually being used.


The pump is triggered to run via the engine Load. Once the Load crosses the threshold in the RPM vs Load table, the pump will turn on. Once load drops below the threshold in the RPM vs Load table, minus the Hysteresis value, the pump will turn off.


Download: Wiring Diagram


The intercooler sprayer light just blinks and the pump never turns on.
There is a problem with your license key. Please re-check you entered the license key correctly. If you are still having issues, please contact [email protected]
I don't see my ROM listed
Email [email protected] with your ROM ID and I'll add it to my list.