20seh engine ecu...
20seh engine ecu...
ive just bought a 20seh engine, loom and all the gubbins to put in my cav, but the guy has "lost" the ecu, but mentioned you can run a 20ne ecu as well? looking on ebay they arnt badly priced, but i want to know which ones will definitely work and if they make any noticeable difference
cheers fellas
cheers fellas
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- planetc
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Re: 20seh engine ecu...
Be aware that most 20NE ecu's that you are likely to find are going to be C20NE and looking for an o2 sensor and tank vent valve, I don't recalll the SEH having them, unless someone remembers better. Could use the complete injection system from one though as the guts of the engine are much the same
"No the temperature gauge doesn't work........
we've driven 150 miles today........
the heater went cold last Thursday........
they check the level when it's serviced don't they?"
we've driven 150 miles today........
the heater went cold last Thursday........
they check the level when it's serviced don't they?"
Re: 20seh engine ecu...
It's going into an L reg that currently has a 1.8 spi in, so could I use the o2 sensor from that?
Theres a fine line between stupid and visionary. You just have to be a visionary to see it.
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Re: 20seh engine ecu...
SEH had higher comp. and a mild cam.planetc wrote:Be aware that most 20NE ecu's that you are likely to find are going to be C20NE and looking for an o2 sensor and tank vent valve, I don't recalll the SEH having them, unless someone remembers better. Could use the complete injection system from one though as the guts of the engine are much the same
Never fitted with Cat and therefore associated gubbins.
I'd have thought most of the difference in the management was in the slightly higher rev limit.....
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Re: 20seh engine ecu...
You'll not get the same "umph" from it as they are setup differently assuming the ECU will fit the loom (c20ne had both 2 and 3 row plugs from memory)
Best off getting an SEH ECU (your not restricted to mk3 cav's either, Carltons and MK2 cavaliers and MK2 astras also came with the SEH I beleive
Best off getting an SEH ECU (your not restricted to mk3 cav's either, Carltons and MK2 cavaliers and MK2 astras also came with the SEH I beleive
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Re: 20seh engine ecu...
I vaguely remember that they will run on both ecu's, but the C20NE will wind up running in limp mode because it wants an o2 sensor signal. If it were mine I'd be searching for the right ecu, which will be optimised for the engine. Senseless having that little bit extra that the SEH has, and then strangling it with NE mapping for the sake of an ecu.
"No the temperature gauge doesn't work........
we've driven 150 miles today........
the heater went cold last Thursday........
they check the level when it's serviced don't they?"
we've driven 150 miles today........
the heater went cold last Thursday........
they check the level when it's serviced don't they?"
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Re: 20seh engine ecu...
planetc wrote:I vaguely remember that they will run on both ecu's, but the C20NE will wind up running in limp mode because it wants an o2 sensor signal. If it were mine I'd be searching for the right ecu, which will be optimised for the engine. Senseless having that little bit extra that the SEH has, and then strangling it with NE mapping for the sake of an ecu.
Very true, but if you want to, you can ground out the o2 plug sense and it should ommit that issue (Andy K or Mark T of VXoN covered this )
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Re: 20seh engine ecu...
and the tank vent valve?Envoy CDX wrote:
Very true, but if you want to, you can ground out the o2 plug sense and it should ommit that issue (Andy K or Mark T of VXoN covered this )
"No the temperature gauge doesn't work........
we've driven 150 miles today........
the heater went cold last Thursday........
they check the level when it's serviced don't they?"
we've driven 150 miles today........
the heater went cold last Thursday........
they check the level when it's serviced don't they?"
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Re: 20seh engine ecu...
Do the 20SEH not have a purge valve?planetc wrote:and the tank vent valve?Envoy CDX wrote:
Very true, but if you want to, you can ground out the o2 plug sense and it should ommit that issue (Andy K or Mark T of VXoN covered this )
My 30E does, and that runs Jetronic.
From the moment I picked up your book until I laid it down I was convulsed with laughter
Some day I intend reading it
'95 TD LS
'85 Monza GSE
'92 Senator 12v Auto
'99 Omega 3.0 MV6
'99 Omega 3.0 MV6 (Ex-Polizei)
Some day I intend reading it
'95 TD LS
'85 Monza GSE
'92 Senator 12v Auto
'99 Omega 3.0 MV6
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Re: 20seh engine ecu...
Tank vent valve? that ickly little black thing on the back of the engine - don't know reallyDieselicious wrote:Do the 20SEH not have a purge valve?planetc wrote:and the tank vent valve?Envoy CDX wrote:
Very true, but if you want to, you can ground out the o2 plug sense and it should ommit that issue (Andy K or Mark T of VXoN covered this )
My 30E does, and that runs Jetronic.
What's a purge valve then?
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Re: 20seh engine ecu...
Tank vent > Carbon Canister > Purge valve > Inlet manifoldEnvoy CDX wrote:What's a purge valve then?
From the moment I picked up your book until I laid it down I was convulsed with laughter
Some day I intend reading it
'95 TD LS
'85 Monza GSE
'92 Senator 12v Auto
'99 Omega 3.0 MV6
'99 Omega 3.0 MV6 (Ex-Polizei)
Some day I intend reading it
'95 TD LS
'85 Monza GSE
'92 Senator 12v Auto
'99 Omega 3.0 MV6
'99 Omega 3.0 MV6 (Ex-Polizei)
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Re: 20seh engine ecu...
Then yeah, the SEH in the MK3 will most likely have some form of it.Dieselicious wrote:Tank vent > Carbon Canister > Purge valve > Inlet manifoldEnvoy CDX wrote:What's a purge valve then?
Re: 20seh engine ecu...
so i have engine, ancilliaries, loom (almost) intact, i'll figure out whats missing as it goes in, and an SEH ecu (when i buy one)
this is all going into a car currently fitted with a c18nz
is there anything else i'm going to need? fuel pump? purge canister(?)?
help much appreciated
this is all going into a car currently fitted with a c18nz
is there anything else i'm going to need? fuel pump? purge canister(?)?
help much appreciated
Theres a fine line between stupid and visionary. You just have to be a visionary to see it.
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Re: 20seh engine ecu...
you'll need a mpi fuel pump. a 16v pump will do.A-J wrote:so i have engine, ancilliaries, loom (almost) intact, i'll figure out whats missing as it goes in, and an SEH ecu (when i buy one)
this is all going into a car currently fitted with a c18nz
is there anything else i'm going to need? fuel pump? purge canister(?)?
help much appreciated