Quote Originally Posted by turbo jetta
i just got my car flashed at euro tech a couple of days ago, with giac.(its a 03 jetta 1.8t) the car runs great but i havea lil problem. my boost surges in higher gears. it goes back and forth betwee 17 and 20 psi when WOT. then i also see it go around 15 psi or 14psi at high rpms, but i think thats normal but i dont think the surging is normal. ive heard a lil about getting a new n75 valve but brian at Euro tech said i shouldnt do it. i dont know what to do. can any one help?
my GTI 1.8t did the same thing. its common. would not worry about it.
The wastegate regulator for 1.8T motors is commonly referred to as the N75 valve. Autotech offers a direct replacement, factory upgrade for the stock 1.8T N75 valve. Known internally as the “J” valve, it literally transforms “chipped” cars by smoothing out the annoying surging that many aftermarket chips are known for.