My C5's ECU

This is the Forum for all your Citroen Technical Questions, Problems or Advice.

Moderator: RichardW

User avatar
Diabolical
Posts: 243
Joined: 27 Feb 2009, 21:08

My C5's ECU

Post by Diabolical »

Can any body tell me what make of ECU in my C5 2.0 HDi 16v on 06 plate it's either Bosch or Siemens hoping it's Bosch for remap.

David
User avatar
Ben82
Posts: 1086
Joined: 03 Dec 2012, 08:47
x 4

Re: My C5's ECU

Post by Ben82 »

Post up the last 8 digits of your VIN and someone can look it up for you :)
User avatar
SaabC5
Posts: 765
Joined: 01 Aug 2011, 23:18
x 1

Re: My C5's ECU

Post by SaabC5 »

Pull the engine cover off and look at the injectors, if there's a series of rubber tubes going across the top of them all linked up you have Bosch, no tubes = Siemens.
RichardW
Forum Treasurer
Posts: 10555
Joined: 07 Aug 2002, 17:12
x 755

Re: My C5's ECU

Post by RichardW »

Looks like only Siemens is listed against the injectors for 16V 2.0 engine.... But VIN may confirm.
User avatar
Diabolical
Posts: 243
Joined: 27 Feb 2009, 21:08

Re: My C5's ECU

Post by Diabolical »

OK Vin 76743420

I had a look and could see no rubber tubes just wired plugs connected to injectors that had no make written on them, decided to look at the ECU took cover off no name written on the top and decided to much effort to remove ECU it to see.
JohnD
Donor 2022
Posts: 2633
Joined: 15 Mar 2001, 00:41
x 63

Re: My C5's ECU

Post by JohnD »

My C5 is Siemens and getting a remap done was no problem. The guy removed the ECU and took it into his workshop.
User avatar
Diabolical
Posts: 243
Joined: 27 Feb 2009, 21:08

Re: My C5's ECU

Post by Diabolical »

Hi John
JohnD wrote:My C5 is Siemens and getting a remap done was no problem. The guy removed the ECU and took it into his workshop.
I had it done that way with my Petrol TCT Xantia He had to remove the chip and replace with remapped one as they couldn't be re-flashed.
I may go for it after I've removed EGR and DPF I was hoping more for to be remapped on the car same time as shutting of depolution light, error.

Still @ 197k not sure worth it even though driving car you wouldn't think so.


David
JohnD
Donor 2022
Posts: 2633
Joined: 15 Mar 2001, 00:41
x 63

Re: My C5's ECU

Post by JohnD »

I had the DPF removed 18 months ago and again the guy had to remove the ECU and take it indoor to connect to his computer.
User avatar
Diabolical
Posts: 243
Joined: 27 Feb 2009, 21:08

Re: My C5's ECU

Post by Diabolical »

JohnD wrote:I had the DPF removed 18 months ago and again the guy had to remove the ECU and take it indoor to connect to his computer.
That's interesting
Did you notice much difference after the re mapping?
Do you know if he's still doing it and where he is based.

David
JohnD
Donor 2022
Posts: 2633
Joined: 15 Mar 2001, 00:41
x 63

Re: My C5's ECU

Post by JohnD »

Diabolical wrote: Did you notice much difference after the re mapping?
Do you know if he's still doing it and where he is based.
I didn't notice much difference after the remap - that is until I hooked on my caravan. Then I did notice it. I was able to maintain 55-60 in 6th gear and the fuel consumption fell 3 or 4 mpg.

I remember driving off after the particle filter was removed. It was like having two engines. And I'm glad to say it still manages to get a quick pass on the MOT emissions.

The company I used for the remap was in Chessington, Surrey and the filter removal was done by a guy in Estbourne. If you need them, I can give you contact numbers.
User avatar
Diabolical
Posts: 243
Joined: 27 Feb 2009, 21:08

Re: My C5's ECU

Post by Diabolical »

Thanks John
I may get back to you on the remap, however going to attempt :x DPS friend & myself. Removing easy enough telling the ECU there isn't one the tricky bit.