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Sorry for the Noob question...but what is the MFRU stand for? Going to be taking my engine apart this summer to try to get my turbo build done, and don't want to waste time later when I can get answers now. :)
Multi function relay unit. The car has one in the engine bay and one at the front and they are not interchangeable.
 

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Well I actually disconnected the battery terminals and put them together to ground everything out. Put them back on the battery and everything works perfect. My only issue now is that the car wants to shut off when I come to a stop. I've checked timing twice now, so I don't think it's that. Working on that issue in another thread.

So for anyone experiencing trouble with this topic, it's worth a try to disconnect from the battery and put the positive and negative from the car together and reconnect...not really sure why, but it worked in my case after trying almost everything else.
 
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