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Has anyone swapped a Bosch ECU using nanocom evolution. I ripped out the SAI on my truck and I am going to swap the ECU to get rid of the CEL and hopefully stop it from running rich (30L/100km Avg. right now vs. (19L/100km Avg. before).
I picked up a matching set BECM and ECU today for less than the price of the BECM anywhere else.
Marty I'm sorting the BECM first. Don't panic!
Any help would be appreciated.

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ECU swap is simple...swap ECU, read immobilisation code from ECU , and program that in the BECM, you don't need to swap the BECM to swap ECU

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I'm not swapping the BECM because of the ECU. I fried a circuit in my BECM last weekend and now my engine does not shut down with the key properly. I'll hook up my nanocom tomorrow and see if I can find the code you speak of. Thx.

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Once you get the new BECM power board installed and it running properly, and are ready to do the ECU swap...

Remove old ECU,<br/>
Refit new ECU,<br/>
Before trying to start it, with the nanocom, key in Pos II, Go into P38 -> Motronic -> Motronic -> Settings. Arrow across to the 3rd page and at the bottom is 'Immobilisation Code' write this number down.<br/>
Then exit out back to the list of ECU's.<br/>
Turn ignition OFF (BECM responds best to diagnostics with ignition off)<br/>
Go into BECM -> Settings -> Alarm. You should get 'DIAGNOSTICS MODE' on the message centre. Don't worry if you don't just yet as long as you can still talk to the BECM!<br/>
Arrow across to the last page and you will see a box with 'Immobilisation Code' above it.<br/>
Tap the white box, and delete the original digits. Write in the digits you wrote down from the settings in the engine ECU.<br/>
Press Red X once,<br/>
Press 'Write Settings'<br/>
You'll get a confirmation.<br/>
Then exit out and 'DIAGNOSTICS MODE' should disappear from the dash.<br/>
Done.<br/>
Then put key back in ignition, and start her up!<br/>

Hope this helps..

Marty

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I always wanted to know how to do that!

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SpiggyTopes wrote:

I always wanted to know how to do that!

An now we do!

Every day's a school day :-)

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As per usual, Marty is full of useful info! Thanks!

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Had to do it a couple of times when testing other people's BECM's in my RR to make sure that they actually start the vehicle etc before sending it back... until I get the keys for my other P38's and I can use one of them as a test subject!!

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Great Info, just found this site, Hello to everyone ! I'm into changing my engine ecu too, can't wait to try this out, hope I don't Brick my truck ! -> MartyUK : thanks, you seem to know your stuff, just need to find a nanocom now !

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bydand wrote:

Great Info, just found this site, Hello to everyone ! I'm into changing my engine ecu too, can't wait to try this out, hope I don't Brick my truck ! -> MartyUK : thanks, you seem to know your stuff, just need to find a nanocom now !

If it is electrickery, Marty is your man. If it is that pesky EAS, then Gilbert is my hero lol

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I've heard somewhere that Marty also knows how to use a sledgehammer...