on my 01 aww 1.8t I have giac X+ and have determined I have surging issues mid range. the car from say 3 to 4k rpm's is bouncing from 21 to 17 to 21 psi in the higher gears. I got a new n75 valve today, have a new mass air flow sensor, switched out my forge 006 to a 710n, check for vaccum leaks with some carb cleaner, check for codes. I'm stumped. Any ideas?
Also, on my 5 speed. No matter how I adjust it it just still wants to stick in gears/pop out now and just acts up. What are the best ways to really go through the shifter / replace it?