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Discussion Starter #1
Hello everyone,

3 months ago I've bought a 2003 E46 150hp, it has a strange problem.. whenever I take it for a ride and push hard on it, the rpm will start acting strange for example i'm on 3rd and want to change to 4th, the rpm stays still for a while then drops slowly, even when ideling if I rev it the rpm will take longer to drop back,
I need to shut it for 10 or 15 min then everything will come back to normal rpm will drop fast as soon as I stop accelerating
On the highway I can't go more than 120km/h,
I've replaced the MAP and MAF, swirl flaps are blanked, egr is blanked.
Inpa shows egr fault, clutch sensor, 4 glow plugs
Tried to put egr back on, hook the vaccum hose and it only made things worse, no boost until 2500 rpm...

Any ideas how I can solve this ?
Thanks a lot !
 

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Discussion Starter #3
All vaccum hoses are new, I've changed them myself, however I can confirm that when accelerating I can hear a loud air noise from the turbo side, My mechanic said it's normal that's the sound of the turbo and there is no air leak...
The car is quick and pulls really hard but this doesn't last longer than 20km and sometimes even less if I'm making hard pulls on it, then it will start showing that strange ''slow dropping rpm thing''
 
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