53 replies to this topic

[Exmantaa]

Dived into the Trionic 7 once, but not sure on their ETB as that operates a little different than our GM ETB's...

Edited by Exmantaa, 01 October 2010 - 08:07 AM.

[vocky]

modifying the corsa loom isn't hard, just takes a few hours to alter it for the z22se engine once courtenays have got an engine running sweet I can post a guide for modifying the corsa and vx looms

[chrisgold]

]
Come back and let us know how you get on once that M-Tech ECU is fitted and running and what the real cost was after they've spent a day or two making the loom fit, ripping out the electronic throttle body and your throttle pedal to replace with a cable operated throttle and pedal and deciding they can't interface it totally with the Stack or your immobiliser.

M-Tech will fit it for £200 (thats what they told me), so why would you bother doing any of that yourself? If they dont get it fully working then you would not pay them and they aint gona offer a service if they cant deliver are they?

[slindborg]

]
Come back and let us know how you get on once that M-Tech ECU is fitted and running and what the real cost was after they've spent a day or two making the loom fit, ripping out the electronic throttle body and your throttle pedal to replace with a cable operated throttle and pedal and deciding they can't interface it totally with the Stack or your immobiliser.

M-Tech will fit it for £200 (thats what they told me), so why would you bother doing any of that yourself? If they dont get it fully working then you would not pay them and they aint gona offer a service if they cant deliver are they?

I imagine you didnt tell them the full story for that price.

but almost no aftermarket ecu plays with the immo on any cars so thats a moot point imho

[NickB787]

Loom = we're not 100% sure yet. Jon Shield has my modified Z12XE/Z22SE loom and he thought it looked about right after Vocky's modifications. Not sure whether he's done much with it as yet but, I think there might be a little race on between two members on here to do the conversion so things will probably speed up a bit now. Alternatively, it's going to need a custom made loom at circa £400.

Sensors = Yep, standard Z20LET TMAP sensor. Jon was initially talking about an 80mm Bosch MAF off an Audi but not sure what the state of play is currently - so maybe just a standard Z20LET MAF? Stefan will delete the clutch switch/sensor in the ECU so that's not required, either.

Trigger wheel = Z22YH crank or external trigger wheel. NickB777 has an external trigger wheel that WelshJohn on here machined for him. Will need an external crank sensor that is also being donated by a Corsa (I think) of some form - sorry, not sure which.

Ignition = Z20LET coil pack. Needs a tiny bit of modification to get the individual coil connectors to fit to the spark plugs and will probably need something to hold it onto the rocker cover to prevent it moving. Stefan will disable cam sensor PID in the ECU.

ECU = Z20LET or Z12XE (exactly the same physical Motronic M1.5.5, possibly also Z14XE). Need all of the transponder stuff and probably the key card with it and Courtenay's can then reprogram it as necessary.

Tuning = Think initially it's only likely to be a Courtenay/Klasen thing. Stefan is going to come over to do things on the first car "live" (or that's the plan). At that point I guess we'll effectively have a base map. Not sure what the tuning/flashing tools are any more but they're certainly available out there.

Immobiliser = Personally, I think they'll be able to match the new ECU to the existing keys and immobiliser but if you get a secondhand ECU, safer to get the keys, ignition barrel transponder and ideally key card.

I have held off on the Z20let ECU as I like my FBW throttle I actually have everything for the DTA conversion but I must admit I like the setup I have.

Trigger wheel was easy to fit thanks to welshjon, didn't fancy another strip of the engine for the YH crank, Corsa crank sensor will be used, need to make a bracket up nice and sturdy though.
Z10xe also can be reprogrammed with your current cars security code if not by Courtenays the I have someone who can do it.

Cam sensor should be written out,

and no race at all I have to have mine sorted first

mainly because I cant drive round a track properly

[techieboy]

mainly because I cant drive round a track properly

And an extra 60 or 70bhp is going to help?

[NickB787]

mainly because I cant drive round a track properly

And an extra 60 or 70bhp is going to help?

well I will have a spare clam this time

NOTE stay off wet Astroturf!!!

Edited by NickB777, 01 October 2010 - 10:27 PM.

[techieboy]

NOTE stay off wet Astroturf!!!

Can't believe we're back there on Tuesday.

[theolodian]

So I'll try to keep this topic back to what is necessary/possible for running the LET ecu on our 2,2's:

Loom => which (LET/Z10XE/standard?), what to mod, pin layout maybe?
Necessary extra sensors => (T)MAP & MAF spring to mind
Crank trigger => needs a 60-2 => available options? Which pick-up sensor used?
Ignition => Use modified 2,.2 coilpack? Use a direct coil system (Saab/LSJ head
Cam trigger => necessary? (Saab/LSJ head have a cam sensor)
ECU => from LET or just buy any M1.5.5 (Z10XE?) and simply reflash for LET use?
Tuning => experience with SC-2,2 in vx220 (Courtenay/Klasen). Base map availability to drive to RR? Self tuning / reflashing tools?
Immobiliser compatibility => simple re-learn procedure for the OEM stuff? (not necessary but nice to have on a road car..)
???

Doing the loom and installation yourself, I still don't see this being cheaper than an aftermarket ecu in the end.

[alanoo]

If people are interested then I will look seriously at offering the solaris ecu as an upgrade but so far I can't see the numbers are there to justify the efforts. Would love to be proven wrong because the solaris is an amazing bit of kit for very sensible money.

is it 'open' (ie can you get the solaris software from them and have a play with the ecu withouth stupid gay ass licence issues etc) ?

It's open by the software really is not intuitive. But the solaris is by far the best feature/price ratio available.

In the end I still went for a Motec M600 as I preferred a proven solution (as almost every issue I had with my previous standalone were with it being almost never used for a GM application).


speaking of OE ECUs, honestly if there is a solution to stick with an OE ECU, just take it, even if it's a swap for a Z20LET ECU, they will be way easier to map perfectly with road driveability features

[Winstar]

If people are interested then I will look seriously at offering the solaris ecu as an upgrade but so far I can't see the numbers are there to justify the efforts. Would love to be proven wrong because the solaris is an amazing bit of kit for very sensible money.

is it 'open' (ie can you get the solaris software from them and have a play with the ecu withouth stupid gay ass licence issues etc) ?

It's open by the software really is not intuitive. But the solaris is by far the best feature/price ratio available.

From my reading of their website it's technically open but you can be 'locked out' of a map done by one of thier resalers.

[slindborg]

If people are interested then I will look seriously at offering the solaris ecu as an upgrade but so far I can't see the numbers are there to justify the efforts. Would love to be proven wrong because the solaris is an amazing bit of kit for very sensible money.

is it 'open' (ie can you get the solaris software from them and have a play with the ecu withouth stupid gay ass licence issues etc) ?

It's open by the software really is not intuitive. But the solaris is by far the best feature/price ratio available.

From my reading of their website it's technically open but you can be 'locked out' of a map done by one of thier resalers.

Just like DTA, MBE and others.... Being locked out of the calibration is no great shock (and not massively hard to get around in most cases )

Being able to actually calibrate it is the key, unlike that of _webCON who dont let you have the software in the first place.

imho 50& of features on most aftermarket ECU's go unused, so cost per feature means shed all imho if you just want simple stuff

[siztenboots]

If people are interested then I will look seriously at offering the solaris ecu as an upgrade but so far I can't see the numbers are there to justify the efforts. Would love to be proven wrong because the solaris is an amazing bit of kit for very sensible money.

is it 'open' (ie can you get the solaris software from them and have a play with the ecu withouth stupid gay ass licence issues etc) ?

It's open by the software really is not intuitive. But the solaris is by far the best feature/price ratio available.

From my reading of their website it's technically open but you can be 'locked out' of a map done by one of thier resalers.

Just like DTA, MBE and others.... Being locked out of the calibration is no great shock (and not massively hard to get around in most cases )

Being able to actually calibrate it is the key, unlike that of _webCON who dont let you have the software in the first place.

imho 50& of features on most aftermarket ECU's go unused, so cost per feature means shed all imho if you just want simple stuff

just as long as it has a knob with - sport : track : race , I want one

[14500rpm]

Does anyone know if the turbo ECU for NA project has progressed any? I'm looking to go SC and this is an appealing option!

[techieboy]

Does anyone know if the turbo ECU for NA project has progressed any? I'm looking to go SC and this is an appealing option!

It's still progressing and should gather some momentum over the next few weeks (fingers crossed). But, unless you're going for the full Harrop SC conversion, the standard ECU is fine for the M62 conversions up to 300bhp.

[vocky]

there are at least two z20let ecu conversions being carried out at the moment, so there should be some feed back in a month or two

[14500rpm]

Cool, thanks guys I got the impression that tuning the z22se ECU was a bit of a compromise?

[The Batman]

It's fine up to 300bhp just above this is where the problem lies... It won't be a cheap solution either I'm afraid

[14500rpm]

I'm looking at a stage 2 SC conversion at the moment so the standard ECU shouldn't be too much of an issue, I guess I can revisit that if/when I get used to the power I think Emerald may be including FBW on their next ECU so that would be another option.

[techieboy]

I got the impression that tuning the z22se ECU was a bit of a compromise?

Courtenay's have now dealt with every possible combination of modifications on this conversion and have ironed out most of the foibles. Mine runs like a dream on a version of Joe's original 300bhp map and all of the part throttle mapping is perfect. I guess the biggest compromise, if you see it that way, is that only Courtenay's in the UK can really do anything with it. But, personally, I don't see that as a compromise and I'm more than happy to venture over to them.

I think the key thing is, if you DIY (or get Joe and Lee to do) the conversion with a generic mail order map on the ECU, is to get the car over to Courtenay's to get it custom mapped to properly suit your car as soon as you can. Without Courtenay's having your car in their hands and being able to monitor fuelling etc, they have to give you a very safe/conservative map which should only be taken as a "get you up and running" kind of thing.