After i put my turbo intake pipe into my a4 my boost readings went all haywire and now it says im only getting 5 psi. I can no longer hear the turbo spool, the boost wont go above 5 psi and the car feels very sluggish, does anyone have any ideas as to what is going on with my poor car??? Please help me, im desperate.

 

Get a VAG-COM reading. I bet you it's the N75 valve either not connected or no longer working.

Also check for leaks.

 

Its a boost leak, check all conections.

 

You might be in limp mode. Make sure all the wires that were connected before are still connected.

 

Your deff in limp mode