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2008 bmw 335i n54 99k miles
I was driving around doing some pulls and everything was going good. All of a sudden my next pull i had little to no boost. I thought something was weird so i tried it again but this time all the boost was there. The next day i was driving doing some pulls and all of a sudden im about full throttle and no boost just all engine. It was doing that pretty much all the way home. So i figured there is a leak somewhere or something. I went and took the top part of the engine bay apart and examined. couldnt find a damn thing except i now have a coolant leak.... Lol. I went for a test drive after hooking everything back up and it drove great. No issues with boost it was all there when i asked it to be. My prediction is maybe its a sort of sensor going out? Because of the fact sometimes has all it's boost and sometimes dosnt have any at all. Any ideas? Any help will be appreciated!
 
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