ok, heres the deal
I hooked up the DRBIII - and read the fuel pressure sensor on the rail,
It has a "suppose to be" field, and a actual reading
(first without EZ hooked up):
When my truck was just started, the actual sensor reading would vary from 4900 to 6700 psi at the rail, but a noticable lope was present but only by ear, it did not shake the truck... It was like the sensor kept over compensating, then under, then over,etc -- So there is a definite problem with the truck, cause that is with NO chips on the rail pressure sensor
(NOW for the readings with EZ)
now after the truck was just started, the actual sensor reading would vary from 4100 to 7500 psi at the rail, and the lope was shaking the truck as each time the sub-4500ish PSI showed on the reading,
Of course that is now proof that the EZ is modifing the fuel pressure to SOME extend at idle... I put the EZ on its lowest level now, so we will see what it does
I tested a new 2005 model and the reading was never more than 250psi from the target pressure, so some varience is there, but just not so darn much!!!
The next step is to of course show my findings to the service manager that thinks I am just being picky...
If anything comes of this in my service dept. I will update!
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