MBE ECU questions.....
Discussion
I was wandering... does anyone know which sensors the wires going into the ECU represent?
Does the ECU monitor engine oil temp too?
Theres nothing on dash, apart from water temp, just wandering if there is already a sensor for oil temp but only hooked up to ECU?
Is the O2 sensor a narrow band or wide band in the cerb 4.5?
If its a narrow band, would the ECU mind if I banged in a sensor with a wider band?
Does the ECU monitor engine oil temp too?
Theres nothing on dash, apart from water temp, just wandering if there is already a sensor for oil temp but only hooked up to ECU?
Is the O2 sensor a narrow band or wide band in the cerb 4.5?
If its a narrow band, would the ECU mind if I banged in a sensor with a wider band?
I believe that information is contained in the CD which seems to be doing the rounds in the regional groups.
Although I would never condone getting hold of one as I think they may be illegally copies. But maybe someone with one could show you theirs. I doubt thats actually breaking the law.
Although I would never condone getting hold of one as I think they may be illegally copies. But maybe someone with one could show you theirs. I doubt thats actually breaking the law.
Agreed, were I ever to have seen a circuit on the MBE I would be able to tell you that neither oil temperature or pressure make it to the MBE box, only air and water temp.
But as I haven't and wouldn't, I can't.
I have a feeling though if you run your fingers along the cable away from the MBE you will find bulkhead connector (CONN2), which may have oil pressure on pin 7 and water temp on pin 21, but thats just a rumour.
But as I haven't and wouldn't, I can't.
I have a feeling though if you run your fingers along the cable away from the MBE you will find bulkhead connector (CONN2), which may have oil pressure on pin 7 and water temp on pin 21, but thats just a rumour.
Both the oil and water temperature sensors that feed the instrumentation are mechanical and use capillary tubes. As a result, there is no electrical interfaces that can be used to link these to anything electrical.
There is a seperate water temp sensor for the ECU though.
>> Edited by shpub on Tuesday 3rd August 10:10
There is a seperate water temp sensor for the ECU though.
>> Edited by shpub on Tuesday 3rd August 10:10
you can also "legally" get the emerald software here
www.emeraldm3d.com/em_software.html
also there is a haynes book on ecu programming that includes the software
www.emeraldm3d.com/em_software.html
also there is a haynes book on ecu programming that includes the software
Graham said:
you can also "legally" get the emerald software here
www.emeraldm3d.com/em_software.html
also there is a haynes book on ecu programming that includes the software
oooh! 3d graphs, that's worth the £1000 all on its own
joospeed said:
what would you like to know ? 
Okay, how easy is it to change maps on the fly?
Are there any inputs which are not used ignored by the software?
Is the traction control worth having?
How weak can you run the engine for an emissions test, and how can you practically make this change
a) while the MOT is running
b) after you get the car home
c) when you have a weekend spare
Lastly can you have the software running while the car is moving to diagnose dynamic engine faults like the dealer software, And what stuff is needed to do mapping while the car is running on a rolling road that isn't included in the purchase price.
If all thats favourable. Price and availability
Out of interest, what exactly is required to map a new ECU?
Say I bought a new ECU (one with a shit load of inputs!), wired the thing up, got the software installed on a laptop...
now what?
are we talking hours of dyno running and the likes?
or is it feasible just to rev and set and drive and set.....?
(I know they might sound like lamer questions, but I'm new to the ECU upgrade scene, and there is a bigger picture lurking in the near future, but need to get the ECU replaced now, as the MBE one doesnt support certain inputs, after talking to MBE themselves, they've insisted to get another brand for my plans.... ahem...)
Say I bought a new ECU (one with a shit load of inputs!), wired the thing up, got the software installed on a laptop...
now what?
are we talking hours of dyno running and the likes?
or is it feasible just to rev and set and drive and set.....?
(I know they might sound like lamer questions, but I'm new to the ECU upgrade scene, and there is a bigger picture lurking in the near future, but need to get the ECU replaced now, as the MBE one doesnt support certain inputs, after talking to MBE themselves, they've insisted to get another brand for my plans.... ahem...)
I run an emerald in my 350, its a very user friendly set-up but as with any afermarket ECU also entirely possible to blow your engine.
You'll have to get pretty friendly with your wiring loom as the emerald uses the rover k-series plug so an adaption harness is required or cut the original plug off and solder on the emerald one.
So a wiring diagram would be a good idea, although emerald have done a cerby already so may be able to help with this.
The changing maps takes seconds but needs a laptop hooked up to do so, also the ecu now features a data logger so providing you can record fuel mixture / Uego output you can drive it around logging data and then stop adjust fuelling and drive around some more.
Final mapping will have to be done on the rollers but you should be able to get it to a point where you can drive it to emerald.
They also should be able to give you a map which would should get you going, if you've never done this sort of thing before I would very strongly reccommend that you seek outside help.
Matt
You'll have to get pretty friendly with your wiring loom as the emerald uses the rover k-series plug so an adaption harness is required or cut the original plug off and solder on the emerald one.
So a wiring diagram would be a good idea, although emerald have done a cerby already so may be able to help with this.
The changing maps takes seconds but needs a laptop hooked up to do so, also the ecu now features a data logger so providing you can record fuel mixture / Uego output you can drive it around logging data and then stop adjust fuelling and drive around some more.
Final mapping will have to be done on the rollers but you should be able to get it to a point where you can drive it to emerald.
They also should be able to give you a map which would should get you going, if you've never done this sort of thing before I would very strongly reccommend that you seek outside help.
Matt
350matt said:
I run an emerald in my 350, its a very user friendly set-up but as with any afermarket ECU also entirely possible to blow your engine.
You'll have to get pretty friendly with your wiring loom as the emerald uses the rover k-series plug so an adaption harness is required or cut the original plug off and solder on the emerald one.
So a wiring diagram would be a good idea, although emerald have done a cerby already so may be able to help with this.
The changing maps takes seconds but needs a laptop hooked up to do so, also the ecu now features a data logger so providing you can record fuel mixture / Uego output you can drive it around logging data and then stop adjust fuelling and drive around some more.
Final mapping will have to be done on the rollers but you should be able to get it to a point where you can drive it to emerald.
They also should be able to give you a map which would should get you going, if you've never done this sort of thing before I would very strongly reccommend that you seek outside help.
Matt
I've had an email conversation with Emerald and they have an adaptor for the Cerb that means you won't need to get friendly with the loom.
I know that they have mapped a 4.5RR and a 4.2 de-cat, so should have something that can get you up and running, but for the extra £200 it would cost to get Emerald to fit the CPU and tune it themselves on their road from the start, I think buying it direct without the initial setup is a false economy.
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