Originally Posted by
Turbosystems
Do not do this
Fitting a pipe to the inlet manifold from the pressure regulator has the total opposite affect on The bosh MFI it will richen at vacuum and lean off when on boost
The system runs a continuous stable fuel pressure, the fuel is metered into the engine by varying the pressure differential between the upper and lower chambers
If you need to alter the fueling you must alter the electromagnet fuel pressure actuator