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2.3 NA regina to 2.3 Turbo LH2.4 motor swap

I looked at my boost gage while driving my 1992 940 Turbo yesterday to check the behavior against your video. I have to really step on it to get the boost gage to approach the middle. That is definitely typical behavior in your car's case. I have had a few Turbo cars that had failing AMMs behave like that. The fuel mileage you are getting also points to a possible bad AMM.
 
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