Excessive Cranking Fuel Pressure / Difficult Starting Hot
The Bosch VP44 internally. that was technically you should the Bosch VP44 injection an
Since Revision 027 the Bosch VP44 Injection pump has not had a rubber diaphragm. So the other reason that woul cause hard starting is excessing cranking fuel pressure. So this little mod will turn of the lift pump dring cranking to ease starting the engine.
Here is idea...
This will cause the lift pump to remain off during the period of timing the starter is operating as soon as the key is released the lift pump will function normally and remain controlled by the ECM.