MustangWorks.com : Ford Forums - View Single Post

Jeff Chambers · 03-14-2006, 09:43 PM

True, but the limits to adaptive learning are reached pretty quickly. Adjusting fuel pressure is a poor way to control A/F though. I had a car on the dyno the other night that changing fuel pressure a mere 2 psi (from 38 to 40 psi) changed the A/F from 13.1 to 12.1! Can't tell you how many cars I see come in running 48 psi of fuel pressure yet they can't understand why the car is hard to start and the fuel mileage is in the dumps.

03-14-2006, 09:43 PM	#15
Jeff Chambers Moderator Join Date: Aug 2000 Location: Milan, OH Posts: 2,699	Re: 19lb or 24lb Injectors True, but the limits to adaptive learning are reached pretty quickly. Adjusting fuel pressure is a poor way to control A/F though. I had a car on the dyno the other night that changing fuel pressure a mere 2 psi (from 38 to 40 psi) changed the A/F from 13.1 to 12.1! Can't tell you how many cars I see come in running 48 psi of fuel pressure yet they can't understand why the car is hard to start and the fuel mileage is in the dumps. __________________ Jeff Chambers 1990 Mustang GT 10.032 Seconds / 137.5 MPH 14-time Street Warrior World Record Setter CRT Performance 2001 Tropic Green Mustang GT - 12.181 / 113.2 MPH 2002 Ford F-250 Crew Cab 7.3l Power Stroke - 17.41@77.2 "There's nothing boring about a small block automatic shifting gears at 9400 rpm!"