jdulle
Veteran Member
I have a 96 B4 tdi and it drives pretty well, has full boost at lower rpm, but at higher rpm you can feel the car surging as if the boost is going higher and lower. I have replaced some of the vacuum lines, but have yet to do the blue one. Also still need to open up the ecu and do the line inside. I would also like to get underneath and make sure the wastegate is moving freely. The injection quantity is a bit low (1.4) which might also cause this? Anyone have any other ideas? Possibly a boost leak? The car runs perfectly besides this and a little idle bounce between 900 and 1000 at times, especially while car is rolling...usually settles into normal idle after 10 sec.