MustangWorks.com : Ford Forums - View Single Post - Just wondering about Catatilitc Converters

blue00gt · 04-09-2003, 05:11 PM

If your car is stock then you have speed density. Fuel injected 5.0's had speed density from '86-'88 and switched to MAF for all '89+ cars. The type of setup you have relays the speed and density of the incoming air to the computer, while a Mass Air Flow meter (MAF) measures the actual mass flow rate of the air coming into the intake. MAF allows the computer to adjust for mods better than speed density, although BONE STOCK vs. BONE STOCK speed density cars are generally a hair quicker (only a tenth or two difference at most in a 1/4 mile).

04-09-2003, 05:11 PM	#13
blue00gt Mustang Addict Join Date: Jan 2001 Location: McKinney, TX Posts: 1,294	If your car is stock then you have speed density. Fuel injected 5.0's had speed density from '86-'88 and switched to MAF for all '89+ cars. The type of setup you have relays the speed and density of the incoming air to the computer, while a Mass Air Flow meter (MAF) measures the actual mass flow rate of the air coming into the intake. MAF allows the computer to adjust for mods better than speed density, although BONE STOCK vs. BONE STOCK speed density cars are generally a hair quicker (only a tenth or two difference at most in a 1/4 mile). __________________ Strike down the unroadworthy! 2000 GT Atl. Blue: '03 Cobra motor - 465rwhp/473rwtq, T-56 6-speed, full MM TA/PH & tubular K-member suspension, Saleen body, 17" Torq-Thrust II's, M/T ET Street radials, and lots more '94 Rio Red Cobra: All the bolt-ons, 3.73s