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Jeff Chambers · 01-08-2006, 07:43 PM

Needing that much fuel pressure to get the A/F correct would say to me that the MAF function needs to be shifted to deliver more fuel. I'd expect that with the 331 since your pulsewidth (and load) is based on the factory displacement of 302 ci. I'll be interested in seeing how much power you make. I've got several customers with 331's similar to yours and typically they're in the neighborhood of 360 rwhp on our Mustang Dyno.

01-08-2006, 07:43 PM	#14
Jeff Chambers Moderator Join Date: Aug 2000 Location: Milan, OH Posts: 2,699	Re: O2 sensor help... Needing that much fuel pressure to get the A/F correct would say to me that the MAF function needs to be shifted to deliver more fuel. I'd expect that with the 331 since your pulsewidth (and load) is based on the factory displacement of 302 ci. I'll be interested in seeing how much power you make. I've got several customers with 331's similar to yours and typically they're in the neighborhood of 360 rwhp on our Mustang Dyno. __________________ 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!"