According to the P4 doc

9.1 BASE PULSE WIDTH CALCULATION
The base pulse width calculation for fuel delivery is shown below:
BPW = BPC * MAPP * T' * A/F' * VE * F33C * BLM * DFCO * DE * CLT * F77
Where:
BPW = Base Pulse Width
BPC = Base Pulse Constant Term
MAPP = Manifold Pressure Term
T' = Inverse Temperature Term
A/F' = Inverse Air Fuel Ratio Term
VE = Volumetric Efficiency Term
F33C = Battery Voltage Correction Term
BLM = Block Learn Correction Term
DFCO = Decel Fuel Cutoff Term
DE = Decel Enleanment Term
CLT = Closed Loop Correction Term
F77 = Turbo Boost Multiplier

Looking in TC in the $58.bin the boost multiplier doesnt adds fuel until 140kpa? is this correct that the sy/ty doesnt get more fuel until about 5psi of boost?

/N.

 

Sounds about right.
Got to remember that's in addition to the PE fuel.

Might also look at the AE stuff.

 

Ok, but the PE fuel is there all the time and not just under boost. So when adding my blower I will add the fuel in boost multiplier table starting at 110kPa sound ok or?

Will try the 58 code before buying a DFI.........

/N.