Technical Wiring an MPI unit into an SPI ECU

benjiman46 · Oct 30, 2008

Hi everyone. I was reading somewhere that you can take a punto 75 head complete with 75 cam, fuel rail, throttle body and injectors, and wire it into the standard SPI ECU. Can this be done? If so, how difficult is it?

Cheers everyone
Ben

:slayer:

ronnieronson · Oct 30, 2008

benjiman46 said:
Hi everyone. I was reading somewhere that you can take a punto 75 head complete with 75 cam, fuel rail, throttle body and injectors, and wire it into the standard SPI ECU. Can this be done? If so, how difficult is it?

Cheers everyone
Ben

:slayer:

what's the point?

benjiman46 · Oct 30, 2008

Because it will make it MPI instead of SPI obviously :S Im not planning on doing it i just wondered if it is true what I've heard.

AppleSei · Oct 30, 2008

who said this? link to thread in question?

arc · Oct 30, 2008

the connectors on the TB are the same, and if you were the 4 injectors into the connector that used to power the single injector then it will run

ronnieronson said:
what's the point?

much bigger ports for one.

benjiman46 · Oct 30, 2008

Oh right so with a punto 75 head and punto 60 bottom end (I know what your thinking but i've already got the bottom end just need a head) what sort of power will i get from it?

arc · Oct 30, 2008

depending on exhaust and induction, around 70-75bhp

fingers99 · Oct 30, 2008

Problem is, it'll need remapping. And you'll need a return line, and a better fuel pump.

benjiman46 · Nov 1, 2008

fingers99 said:
You'll need a return line, and a better fuel pump.

Yeah I thought I might. Fcuk it ill just use the cam and TB from the 75 and make do lol I cant be bothered with faffing about lol

Technical Wiring an MPI unit into an SPI ECU

Currently reading:
Technical Wiring an MPI unit into an SPI ECU

benjiman46

New member

ronnieronson

Bring On The Trumpets!

benjiman46

New member

AppleSei

RIP L181 VBB

arc

this is where i stand

benjiman46

New member

arc

this is where i stand

fingers99

Patron member

benjiman46

New member

Similar threads

Technical Wiring an MPI unit into an SPI ECU

Currently reading: Technical Wiring an MPI unit into an SPI ECU

New member

Bring On The Trumpets!

New member

RIP L181 VBB

this is where i stand

New member

this is where i stand

New member

Similar threads

Currently reading:
Technical Wiring an MPI unit into an SPI ECU