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Stock boost gauge not working correctly


Homer
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I have a UK engine fitted to a Facelift (series 2) shell. The stock boost gauge is going directly to maximum as soon as the ignition is switched on (Engine not running).

The engine runs fine and I’ve traced the wiring back to the engine loom and no breaks were found.

I’ve also spoken to Keron who said he’s done this type of install before and it worked fine (not specifically an EUR spec engine).

Does anyone have any insights as to what could be the problem? I’m thinking this might be some specific to the UK engine…

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14 minutes ago, Mike2JZ said:

Is this a UK Spec Engine loom as well?

Yes, stock UK engine and loom, plugged into a series 2 shell. Everything else appears to be working as normal except the oem boost gauge (useless as they are, but it might indicate a future issue I’ve not detected yet).

The car has not been driven yet so it’s not seen any positive boost.

Edited to add: As far as I can ascertain there are no wire breaks, nothing aftermarket added and it’s 100% stock on the Engine, engine loom and Ecu side.

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Havent got a UK specific wiring diagram in front of me right now, but think its the same as USDM (as below)

image.png.171e832d43fd05c69b7c9fa334999c43.png

 

MAP Sensor only goes direct to ECU on UK & Prefacelift cars. 

Facelift car has the PIM signal going from sensor to ECU & Pin 16 on Orange passenger footwell connector (which connects to dash gauge). 

I havent done a UK setup in facelift car before but seems you will just need to splice a new wire in your PIM wiring, and run to Pin16

image.png.aff55a904cc398f2373a4dcc91ca45c5.png

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