850 tdi ecu swap? Remap?

john123456 · Jan 10th, 2022, 19:37

I have an 1996 volvo 850 tdi.

I'm enquiring about potentially remapping it. The mapper asked me to take my ecu apart and send some pics of the the inside so he can see the chips. Obviously I'd rather not do this as I've never even unplugged an ecu

Are the ecu's coded to each car? In other words can I simply plug in another msa15.7 ecu and run it or will i need to mess about swapping keys and what not????

was thinking of simply buying a spare 850 tdi ecu for him to play with and see if he can write to it and then fitt it to my car.

rudi dudi · Jan 10th, 2022, 20:40

Plug and play.No coding

Martin Cox · Jan 10th, 2022, 22:45

Getting a spare ECU sounds a sensible way to go about it. If it all goes horribly wrong then you still have a good original unit.

If you haven't already done so, posts by Martin R Smith on this forum are worth reading since he has considerable experience in this area.

Martin

john123456 · Jan 15th, 2022, 18:53

I got the ecu today plugged it in and she works perfectly thank you all for the comments as always

john123456 · Feb 5th, 2022, 14:10

Got the spare ecu back today from the mapper local to me. He managed to solder 2 sockets in the ecu and then map it.

Fitted the ecu and its made a massive difference. Also seems to feel smoother. it used to be a bit rough as the revs dropped but its perfectly smooth now. Very happy with the outcome.

Jan 10th, 2022, 19:37	#1
john123456 Junior Member Last Online: Feb 20th, 2023 17:43 Join Date: Jul 2014 Location: Lincoln	850 tdi ecu swap? Remap? I have an 1996 volvo 850 tdi. I'm enquiring about potentially remapping it. The mapper asked me to take my ecu apart and send some pics of the the inside so he can see the chips. Obviously I'd rather not do this as I've never even unplugged an ecu Are the ecu's coded to each car? In other words can I simply plug in another msa15.7 ecu and run it or will i need to mess about swapping keys and what not???? was thinking of simply buying a spare 850 tdi ecu for him to play with and see if he can write to it and then fitt it to my car.

Jan 10th, 2022, 20:40	#2
rudi dudi DPF free.FCUK Greta he he Last Online: Mar 28th, 2024 13:38 Join Date: Jun 2012 Location: Bristol	Plug and play.No coding

Jan 10th, 2022, 22:45	#3
Martin Cox VOC Member Last Online: Yesterday 09:24 Join Date: Dec 2001 Location: Hull	Getting a spare ECU sounds a sensible way to go about it. If it all goes horribly wrong then you still have a good original unit. If you haven't already done so, posts by Martin R Smith on this forum are worth reading since he has considerable experience in this area. Martin

Jan 15th, 2022, 18:53	#4
john123456 Junior Member Last Online: Feb 20th, 2023 17:43 Join Date: Jul 2014 Location: Lincoln	I got the ecu today plugged it in and she works perfectly thank you all for the comments as always

Feb 5th, 2022, 14:10	#5
john123456 Junior Member Last Online: Feb 20th, 2023 17:43 Join Date: Jul 2014 Location: Lincoln	Got the spare ecu back today from the mapper local to me. He managed to solder 2 sockets in the ecu and then map it. Fitted the ecu and its made a massive difference. Also seems to feel smoother. it used to be a bit rough as the revs dropped but its perfectly smooth now. Very happy with the outcome.

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