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Running a 4.1 on a 3.9 MPFI ecu 


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 Post subject: Running a 4.1 on a 3.9 MPFI ecu
Posted: Sun May 21, 2006 10:10 pm 
Oompa Loompa

Age: 39

Posts: 31

Joined: 7th Nov 2004

Ride: bluebird

Location: Orange
NSW, Australia

I'm going to try to get a XF injected motor to run with a multi point ECU in a TD Cortina.
I've pulled a wiring loom out of an EA 5 speed and can't see any problems except for the vehicle speed sensor.
I'll be using an xf distributor, EA injectors, not sure about Throttle position or idle control yet.
Can anyone see any problems with this? something I may have missed?
What will happen if I just don't hook up the vehicle speed sensor?



1970 V6 GT Capri
1971 1UZ powered Capri
1984 1UZ turbo powered Bluebird wagon
1989 GLX Cressida

Posted: Mon May 22, 2006 1:03 pm 
Technical Contributor
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Ride: Falcon

Location: Sydney
NSW, Australia

If you are running the 3.9 ECU, make sure you run a MAP sensor, not the Air Flow Meter sensors. XF distributors are the same as E series anyway (the EFI ones), as long as it has a TFI module off the side of it.

EA injectors are fine (As long as they are the MPFI ones), if you are running a 3.9 ECU, then you'll need an E series throttle position sesnsor.. its not vital, but would be nice. and idle Ill leave up to you, but keep in mind the stock ECU can only control the Ford 2 wire PWM idle valves.

Oh, and dont worry about the VSS (Vehicle Speed Sensor).





Cheap, fast and reliable.. choose 2.

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