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post #1 of 5 (permalink) Old 11-28-04, 03:46 AM Thread Starter
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CFi and MPFi ECU's

Whats the differences between the CFi and MPFi ECU's on EA series 2?
My CFi ECU im thinking might be cactus due to its doing the same thing as MustangNicko's car plus The previous owner use to jump start it occasionally and didnt know the first thing about cars.

Can i use the MPFI ECU? or Should i get another CFi one for the mean time.
I do intend on converting to MPFi over christmas


1991 Ford Falcon EA 30th Anniversary

EF head | EF XR6 Cam |Pacemaker 3320(?) extractors | Hiflo cat
3:23 | Auto | XH Snorkle | Thermos | 2.5" Mandrel Exhaust
Full NC2 Sportsman Interior inc Dash & Electrics
Custom Clear Tailights and Garnish
Sprint kit | Moffat front bar (soon) | king lows
FTR Chrome Rims | Driving lights | Custom ED Mesh grill
Pioneer of the Clear ED tailights
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post #2 of 5 (permalink) Old 11-28-04, 05:50 PM
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Re: CFi and MPFi ECU's

In a word, no. Two reasons, the first being that the idle is controlled very differently cfi-mpfi, mpfi uses a 2 wire voltage controlled setup, cfi uses a 4 wire positional motor setup.
Also, the injectors are controlled differently. CFI has different amounts of fuel that can be pumped in, mpfi it's just on or off, basically.
Just grab a cfi ecu for the time being, there are about 7 million cfi ea's down at JRs.

EA GL-Ghia pseudo operator
3.9 MPFI converted 4 speed
2.5 inch exhaust
NC Ghia interior (except rear trims)
Fairmont audio (with 4 speakers)
Cruise control
S-pac cluster with white dials
Trip computer and Fairmont interior lighting.
Half wired Ghia BCM.
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post #3 of 5 (permalink) Old 11-29-04, 12:20 AM
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Re: CFi and MPFi ECU's

i have a CFI computer. :) $0. series one though.
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post #4 of 5 (permalink) Old 11-29-04, 01:40 AM
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Re: CFi and MPFi ECU's

i have a cfi ecu sitting here doing nothing, car was 4 speed auto too
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post #5 of 5 (permalink) Old 11-29-04, 02:42 AM Thread Starter
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Re: CFi and MPFi ECU's

Thanks guys

john_xr6 and i were just talking about it so thought id post it up to see what the differences are. Ill visit pinchies after work tomorrow

1991 Ford Falcon EA 30th Anniversary

EF head | EF XR6 Cam |Pacemaker 3320(?) extractors | Hiflo cat
3:23 | Auto | XH Snorkle | Thermos | 2.5" Mandrel Exhaust
Full NC2 Sportsman Interior inc Dash & Electrics
Custom Clear Tailights and Garnish
Sprint kit | Moffat front bar (soon) | king lows
FTR Chrome Rims | Driving lights | Custom ED Mesh grill
Pioneer of the Clear ED tailights
InitialD is offline  
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