Topic: Engine transplant... Now I'm stuck.. (Read 4123 times)

Davey · « **on:** 17 August 2006, 08:15:25 »

I had to resort to getting the ECU and transponder from a Z12XE engined corsa as the key + transponder for the engine I purchased never materialised.

The ECU for the Z12XE is a Bosch M1.5.5 (same as the Z20LET) but obviously the map is wrong.. I've managed to power the ECU up and wire it up to a spare OBD port for diagnostics.

So heres the question: Do I need to write a complete map from an Astra GSi ECU or can I just change the engine code on the ECU and it will use a map it already has internally? Vauxhall seem to think they just "code it to the car" which involves no software updates?

If anyone knows anything no matter how trivial please dont be affraid to tell me as I'm getting totally stuck now

Cheers!

Marks DTM Calib · « **Reply #1 on:** 17 August 2006, 08:37:45 »

I would of thought it was a downloadable map, which is probably what is realy happening when they code the ECU (not to bright these vaux mechanic guys).

I assume the ECU is the same Vaux part number......

Davey · « **Reply #2 on:** 17 August 2006, 12:16:11 »

Yep same Vaux and Bosch partnumber, so I'm only assuming that the difference is the fuel map.

I've been looking at these KWP2000 devices that say they can flash the ECU but I'm very skeptical, plus no one seems to have a copy of the Astra GSi map

Marks DTM Calib · « **Reply #3 on:** 17 August 2006, 12:17:37 »

Tech2 is the only proven way of downloading the map that I know of

Davey · « **Reply #4 on:** 17 August 2006, 12:28:28 »

My local vaux garage are telling me they cant do it with Tech2, are they just retards??

M-Tek Performance · « **Reply #5 on:** 17 August 2006, 13:06:10 »

Our chip supplier can download a map to it.

it would be an uprated map, ie a stage 1 type..

We had a customer with a Zafira GSi Turbo and that had a new map downloaded to it.

Davey · « **Reply #6 on:** 17 August 2006, 13:10:53 »

Thanks for the kind offer but Hull is a bit to far for me to go with a Z20LET running on a Z12XE map

I'd probably have no pistons left.

I dont suppose you could be kind enough to provide me with the binary file for the map?

Marks DTM Calib · « **Reply #7 on:** 17 August 2006, 13:29:02 »

You could post the ECU upto Hull.....

Davey · « **Reply #8 on:** 17 August 2006, 13:31:42 »

I needs to be powered up, attached to the transponder reciever with the key, or its locked out. Its a solid state ECU, nothing like the old Eprom/PIC based ECU's.

M-Tek Performance · « **Reply #9 on:** 17 August 2006, 13:43:10 »

i can ask if they will send the map out, but i doubt they will do it for free

Marks DTM Calib · « **Reply #10 on:** 17 August 2006, 15:07:42 »

Quote

I needs to be powered up, attached to the transponder reciever with the key, or its locked out. Its a solid state ECU, nothing like the old Eprom/PIC based ECU's.

Lol, the EPROM based ECU's are also soild state you know.....I suspect you mean Flash based....like the later 2.2, 2.6, 3.2 and last of the 2.5 and 3.0 2.8.3's.

Davey · « **Reply #11 on:** 17 August 2006, 15:11:42 »

That'll be what I mean

Its the same as the ECU that was introduced on the 2.2 omega, well not actually the same as the omega one has a totally different pinout and its a Siemens unit.

Davey · « **Reply #12 on:** 18 August 2006, 12:05:03 »

More interesting problems.. The newer vauxhalls have a local bus system, each 'area' of the car has its own control unit which communicates with the ECU and other components. For example the Body control unit communicates with the ECU, it can then disclose engine and road speed, engine temperatures etc to the instrument control unit that displays it on the various gauges/lights. Obviously I will not have the body control unit so I need to supply the engine temperature and speed to the gauges some how, engine speed shouldnt be so bad I can feed one of the cylinder firing references to the rev counter that should be correct... bah who knows...

bloody modern cars!

TheBoy · « **Reply #13 on:** 18 August 2006, 12:48:43 »

Yes, thats the CAN bus stuff. And various devices are the interfaces between some of the different buses - for example, the MID is interface between the slow and medium speed buses on Vectra C.

I believe Geff had a loom made up when he works at v6 plant, and it cost several thousand £

Was the donor car a CAN bus car (ie was it Astra-G or Astra-H)

Davey · « **Reply #14 on:** 18 August 2006, 12:55:21 »

Donor cars are 2004 Zafira and a 2003 Corsa. The corsa ecu has far less interface with the other devices compared to the zafira that has all sorts of extra gubbins, I can get the ECU to come on line but it complains about not seeing the body control unit, hopefully this wont raise the MIL light and a limp home state.

AFAIK all of the Astra/Zafira turbos are based on the can bus system, there are 2 Other Omega turbos in the country both using the M1.5.5 and Z20LET ECU so its got to be possible

And I obviously cant use the Body control unit from the corsa/zafira as it also relys on the corsa/zafira instrument cluster.

I'm going to bite the bullet and attempt to start the engine on the stand, I need to source a fuel pump and hoses first though.

TheBoy · « **Reply #15 on:** 18 August 2006, 13:00:53 »

Zafira and Corsa are not CAN, nor is Astra-G. I think the only CAN are Vectra-C/Signum and Astra-H

Davey · « **Reply #16 on:** 18 August 2006, 13:10:44 »

Sorry, maybe I'm using the wrong terminolgy. The point I was trying to make is the ECU talks to the body control unit that in turn talks to the intrument control unit on single channels, i.e. there is no single feed for engine speed, coolant temperature that I can give to the bogo dash in the omega.

Davey · « **Reply #17 on:** 18 August 2006, 13:34:03 »

I've just been on the phone to a KWP2000 interface supplier, he assures me I can read and write the map to a M1.5.5 with the KWP protocol.. lets see what happens

TheBoy · « **Reply #18 on:** 18 August 2006, 13:38:49 »

I think Omega gets speed from ABS unit, rpm from motronic, dunno about temp.

Davey · « **Reply #19 on:** 18 August 2006, 13:56:31 »

Road speed shouldnt be an issue hopefully then.. Dont suppose you know if the engine speed output on the simtec is 1 pulse per revolution? if so I can substitute that with the firing signal for a single cylinder .

TheBoy · « **Reply #20 on:** 18 August 2006, 13:57:23 »

no idea, sorry

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Author Topic: Engine transplant... Now I'm stuck.. (Read 4123 times)