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XC70 ECU to volvo 850 :)

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo's stylish, distinctive P2 platform cars sold as model years 2001-2007 (North American market year designations).

2001 - 2007 V70
2001 - 2004 V70 XC (Cross Country)
2004 - 2007 XC70 (Cross Country)
2001 - 2009 S60
2003 - 2007 S60 R
2004 - 2007 V70 R

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vah
Posts: 3
Joined: 15 November 2020
Year and Model: 2003 XC70, 1996 850
Location: Estonia

Volvo Repair Database XC70 ECU to volvo 850 :)

Post by vah »

Hi,

i'm currently planning to lift a b5254T2 engine from S60 (2003 year) to my good tusty 850 :twisted: . I have full wiring harness and original ECU of the engine at hand. Since it's well known, that ECU tends to be married to car VIN, CEM etc., my question is simple. Do you know, is it possible to get ECU working without rest of the original car electronics by just plugging it in? The key is the plug in solution - no hacks involved. The B52524t2 will be wired to the rest of the system in a manner that only engine sensors + new throttle pedal & injectors are visible to it. Rest of the car remains to be handled by original 850 Fenix Ecu.

If plug in option won't work, i have a custom ECU ready to handle the engine as well (this shall control the system at the end of the project anyway) .... but the mappings will probably be suboptimal there. I would really prefer to start with only 1 big and complex variable :D.

Thanx in advance ...

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