EFI to MPEFI conversion

[joelman32]

does anyone know how much it would cost and how to go about converting an EA EFI to MPEFI?.

[efgiar]

EA cpi (center point injection) mpi (multi point injjection) CFI to MPI should cost that much, ull need ecu, loom, and the obvious ones... not sure how to trouble shoot tho but i would just go and buy an mpi ed ghia :P

[Papa Smurf]

Joelman, I am going to do the same thing myself very soon. A young guy at work and myself bought an EA S-pack for $200.00 and it has MPEFI. I have taken the MP inlet goodies, the Wiring Harness, ECU.

I was alos lucky to get the seats and the Springs, shocks and Suspension setup
Will let you know how I go. Would suggest that you see if you are able to buy a bomb like this and take the goodies off it. You will also need to change the Fuel Pump and the Relay

[joelman32]

thanks papa smurf, yeh it would be good to see how you went.

[Brent79]

This conversion should not cost more than $200 if u do it yourself. Ive done it as cheap as $80 from getting the parts off ebay. You will need:
-MPI intake manifold, fuel rail and wiring harness.
-Upgraded fuel pump
-Throttle cable to suit
-few lengths of different rubber tubing
-Depending on transmission, u might need a new kickdown cable or duel gang TPS
-ECU

Other small bits'n'pieces may be needed

Brent

[old_mate]

Brent....been a long time mate

[NZ]

Brent is our pioneer MPFI'er

[TuMor]

Im gona be doing the same thing very soon. Just a question..
Im converting a 5spd CFI to MPFI, the parts car with the goodies is an auto. Would i use its ECU?
Both cars are EA spacs.
-Cheers

[Jason[98.EL]]

tumor the ecu is diferent you need the one for the 5 speed
im in the middle of the conversion myself
had it allin the car and found the ecu was different
only now have i found one to suit the 4 spd auto
so hoping to have it in before christmas

jason

[Walkinshaw]

Lol, i remember when cfi-mpefi was the big hardcore performance mod.

Brent / NZ got it moving on i8.

[ozziechief]

joelman, you also need the heater pipe and some heater hose

tumor, you need the ecu to run the mpfi just have to do a little wiring to run the manual my mate did it the other not too hard just check a workshop manual its pretty easy

[Brent79]

As above... but would be easier tho if u get either a 3 speed MPI ECU or a 5 speed one (hard to find) the 3 speed auto ecu's will work just fine! Karl... i got the costs down from $3 grand to $80. Hahaha (hmmm not so funny) Also, its best if u rewire the sensors to the old CFI engine loom. Dont go screwing around with connectors as there are differences between models. cut the connectors at the ends and wire in new lengths to the sensors on the MPI manifold. This way, all your ignition wires (coil, dizzy, etc) are left alone.
Cheers

Brent

[TuMor]

Originally Posted by Brent79

As above... but would be easier tho if u get either a 3 speed MPI ECU or a 5 speed one (hard to find) the 3 speed auto ecu's will work just fine! Karl... i got the costs down from $3 grand to $80. Hahaha (hmmm not so funny) Also, its best if u rewire the sensors to the old CFI engine loom. Dont go screwing around with connectors as there are differences between models. cut the connectors at the ends and wire in new lengths to the sensors on the MPI manifold. This way, all your ignition wires (coil, dizzy, etc) are left alone.
Cheers

Brent

cheers brent! the MPFI EA im using for parts is a 3spd auto!

[Damo]

that ECU will work TuMoR, I run a 3 speed ECU in my EA. It was converted to MPI and 5 speed, runs fine no idle issues or anything, even beats tired VN SS's lol :P