NO BOOST N 1ST >>>BUCKING N 2,3,4,5

[Luttrull]

Yea i just got my car back from having the head gasket done, and no i have no psi in first and then ill shift to 2nd and it will make boost (this is at wot and about 15lbs of boost) and go fast, then about 3000 or 3500 or so it will buck like 2 or 3 times, then make full boost and go like its
supposed to all the way to 6000rpm just like it should. It does this through 5th. What could this be?? i do have a slightly noticeable exhaust leak too but have yet to locate it. Please help thanks

 

[paranoidTSi]

Sounds like spark plugs/wires...exhaust leaks don't hurt performance enough to buckle your car its just more of a noise nussiance.

 

[SpeedFreak03]

Yep change those plugs and wires!