Blessed Performance for the Wehrli Twin CP3 Controller for 2001-2005 Duramax.
A second CP3 pump adds volume to your high pressure fuel system to maintain consistent and smooth rail pressure in high horsepower applications.
This product provides the necessary microprocessor control to allow use of a 2nd belt driven CP3 pump in conjunction with the stock location, gear driven CP3 for a dramatic increase in pumping capacity and volume while reducing drive load on a single pump for improved reliability.