MembersPage/HusseinHolland

I'll be converting my Volvo V70 XR AWD over to VEMS to take advantage of the Precision PTE 6262BB turbo I am installing. I plan to build the VEMS 3.6 into a Motronic ECU case and use as much of the stock wiring as possible.

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I already have a separate COP setup through TurboTunerUSB?, so I will need to include new wiring from unused pins in the ECU for the logic level outputs.

I plan to leave a stock (modified for no CEL reporting) ECU in a bridge connector to retain the instrumentation & basic OBDII output for state inspection purposes

I want to retain items from the existing ME4.4 such as the AC/2 speed fan functionality, Barometric pressure compensation, dual knock sensors and Accelerometer (if possible).

The main item I have to add is the MAP/MAT (038 906 051) , I'm going to use the Bosch/VW item. I can repurpose existing wiring from the EVAP valve for that.

EDIT: ordered the 4bar MAP from the UK: 03K 906 051

The WB02 will be installed in place of the existing rear O2, I just have to add one wire to the stock harness for that.

Main Engine harness mostly ready.

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WBO2 wired where Rear O2 used to go, added wire for Nerst

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MAP installed in intake

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IAT in intake pipe

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VEMS board arrived - so assembly & install in Motronic box is next

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started laying out board connections

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heat sinks

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Motronic wiring

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Rebuilt engine is back in the wagon, so I'm ready to get back into the VEMS

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a US Volvo forum member found this for me:

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Which would appear to resolve my dilemma as to how to proceed with wiring for the stock IAC valve.

Finished wiring the Motherboard to the Motronic connector

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Epoxied wiring to prevent issues with potential movement

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Main connector in place

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Now I need to start learning the software & configuration for my setup.