Originally Posted by waldig
What up, you were going to increase the pressure and the 50 psig at idle is below the stock 60 psig?
Yeah, the regulator is smarter than a Fift Greader. Add pressure and the fuel pressure regulator output goes up. Why is idle showing 50psig??
The idle is seeing about 20 inches of vacuum or -10 PSIG at the regulator sense port so you drop to 50 psig fuel pressure. Whats that negative thinggy about?
There is no problem as the ECU controls the a/f at idle and it can and does correct for the reduced pressure. Wait the pressure is not less, 50psig and a -10 PSIG vacuum still give you a difference across the injector of 60 psig.
Nuff said. How do it know?????
Woody