The Dtune high pressure fuel pump upgrade camshaft is a game changer for people looking to heavily tune engines that use the Bosch CP4 pump! The camshaft allows for greater lift/duration of the rotating assembly to further increase fuel rail pressure and also allows for more stable rail pressure when increased boost pressures are requested.
The camshaft has been thoroughly tested in our own vehicle and is proven to work extremely well in the most demanding conditions. The shaft itself is proven to deliver up to 700hp worth of diesel.
Professional installation is highly recommended, and modifications are required to the pistons! If you would like to send in your fuel pump and have us install the camshaft, please select this service from the dropdown.
 
We also recommend the Dtune Disaster Prevention Kit alongside this upgrade.
 
If you selecting "fitting" you will be required to post your fuel pump to us in order for us to install the upgraded shaft.