Find
Fuel
Flow
After
Pressure
Change
(see
worksheet
below)
To find the new FUEL FLOW rate after a fuel pressure change:
Example 1:
A 240 CC injector tested at 43.5 PSI is run at 50 PSI.
Example 2:
The horsepower value of this injector would increase by the same rate
(X 1.0721), if all other engine management systems
remain unchanged.
Flow rate at old pressure
240 cc/Min divided by 10.5 = 22.86 Lb/Hr

Flow rate at new pressure
257 cc/Min divided by 10.5 = 24.48 Lb/Hr

So, the resultant change in pressure would yield the following:
240 cc/Min X 1.0721 = 257 cc/Min
22.86 Lb/Hr X 1.0721 = 24.51
Lb/Hr
36.58 Hp X 1.0721 = 39.22 Hp
