I bought a golf gti 2 days ago , the first day it ran perfect but today i noticed that it was losing power then its lost all turbo power and sounds like the exhaust is blowing . Can anyone help me find out what the problem is ? I love the car and just want all the power back . It has a milltec exhaust system , stage 2 remap , k and n air intake system running at about 350bph (apparently) . Iv read on a miltec forum that the flexi pipes brusting is a common fault but when it was losing power threw out the day it sounded like the turbo was whistling so i havnt go a clue whats wrong ! Iv asked 3 diffrent garages and got 3 diffrent answers .
