Spi Ecu Swap Out
#1
Posted 20 December 2018 - 06:03 AM
Is it possible to swap a single plug ECU for a twin? I’ve got a single plug sidewalk engine in my current project but have got my hands on a twin plug cooper ECU and engine loom. Just wondering whether I can swap the two? If no one has tried then I might just have to have a go!
Cheers
#2
Posted 21 December 2018 - 09:43 AM
Its not just the wiring loom in the engine bay that's different,
the twin plug ecu needs an accelarator pedal switch, it will run poorly without it.
#3
Posted 21 December 2018 - 07:00 PM
Its not just the wiring loom in the engine bay that's different,
the twin plug ecu needs an accelarator pedal switch, it will run poorly without it.
I didn’t know but... the sale included the body loom aswell! Haha
I’m just thinking it’s probably worth swapping as the Cooper ECU is claimed to be a better one? The car is currently stripped.
#4
Posted 24 December 2018 - 07:23 AM
#5
Posted 24 December 2018 - 07:53 AM
I believe the Cooper ECU should give you about 10% more power (with the right setup), I think i read that on this forum.
The twin plug wiring for the body runs through the roof rather than over the floor. not a hard job to fit it, just fiddly
#6
Posted 24 December 2018 - 12:55 PM
#7
Posted 27 December 2018 - 04:03 PM
Cheers guys, I’m going to use the complete earlier loom and ECU and drop in an aftermarket cam. I might get the head skimmed a touch but not sure yet.
Sounds good!
Berfore I forget, the throttle pedal itself is also different (because of the switch thats mounted to it)
#8
Posted 28 December 2018 - 07:15 PM
Cheers guys, I’m going to use the complete earlier loom and ECU and drop in an aftermarket cam. I might get the head skimmed a touch but not sure yet.
Sounds good!
Berfore I forget, the throttle pedal itself is also different (because of the switch thats mounted to it)
Thanks! Out of interest, where is the switch on later SPIs?
#9
Posted 28 December 2018 - 09:53 PM
#10
Posted 29 December 2018 - 12:38 PM
The switch is on early spi and it’s under or beside the pedal on a small bracket ( I can’t quite remember ) the switch was replaced with a more conventional throttle position sensor that is now expltremely difficult to source new
Cian, does that mean that the throttle body or inlet manifold is different on later cars?
#11
Posted 29 December 2018 - 03:24 PM
The switch is on early spi and it’s under or beside the pedal on a small bracket ( I can’t quite remember ) the switch was replaced with a more conventional throttle position sensor that is now expltremely difficult to source new
Cian, does that mean that the throttle body or inlet manifold is different on later cars?
no,it is done within the software
#12
Posted 29 December 2018 - 05:05 PM
Morning all,
Is it possible to swap a single plug ECU for a twin? I’ve got a single plug sidewalk engine in my current project but have got my hands on a twin plug cooper ECU and engine loom. Just wondering whether I can swap the two? If no one has tried then I might just have to have a go!
Cheers
Surely using an MPi ecu with single point injection would completely mess up the fuelling?
#13
Posted 29 December 2018 - 08:25 PM
Surely using an MPi ecu with single point injection would completely mess up the fuelling?Morning all,
Is it possible to swap a single plug ECU for a twin? I’ve got a single plug sidewalk engine in my current project but have got my hands on a twin plug cooper ECU and engine loom. Just wondering whether I can swap the two? If no one has tried then I might just have to have a go!
Cheers
Twin plug, rather than twin point lol. Earlier SPi cars had two ECU plugs, later cars had one.
#14
Posted 09 January 2019 - 01:29 PM
FS
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