MustangWorks.com : Ford Forums - View Single Post - Eec-iv A9l = C3w1

Jeff Chambers · 10-06-2005, 09:35 AM

There are some differences to the A/F and spark tables. In short, the C3W1 has richer base fuel values but a less WOT fuel fuel multiplier so it works out to almost the same. The C3W1 is commanding about 5.5-degrees more spark at WOT throttle than the A9L so that might be the cause of the pinging. You'd need a custom tune to change these things. Have you tried running premium fuel?

10-06-2005, 09:35 AM	#4
Jeff Chambers Moderator Join Date: Aug 2000 Location: Milan, OH Posts: 2,699	Re: Eec-iv A9l = C3w1 There are some differences to the A/F and spark tables. In short, the C3W1 has richer base fuel values but a less WOT fuel fuel multiplier so it works out to almost the same. The C3W1 is commanding about 5.5-degrees more spark at WOT throttle than the A9L so that might be the cause of the pinging. You'd need a custom tune to change these things. Have you tried running premium fuel? __________________ 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!"