N75 would be way easier so start there, get a manual and it should be a easy DIY. As for the WG that will take some time cuz it's so tight you need to take the turbo off.

 

i have the vw passat and audi a4 manual. but i cant find the n75 vale. is there another name for it?

 

im not sure, maybe someone else knows but i just that it was n75 valve

 

ok locate your airbox
remove cover and air intake ducting
the large house running out of the front of it is the turbo inlet house
the N75 is located down near the end of that. you will have to unclamp one other valve (breather valve) I think to see it.
then its the valve that has 3 connections on one end and an electrical plug on the other end.

go to ECStuning.com to see a pic of it. its the race valve.

try unplugging it and plugging it back in. in order to do this you must find the little metal bracket which slides in one direction to loosen it.

just mess around down there for like 20 minutes and you'll figure it out. you'll also be able to view the turbo from there.

 

thanks guys. you have been a big help. but if its not my n75 valve then i guess its the waste gate. does anyone know how much a local shop might charge to fix it? not the ****** stealership. i might as well give them my credit card. lol

 

it depends on the milage of your car, the ko3 should and can last a really long time, maybe the vacume line that conects to the waste gage came off, if i were you i would check for leaks, and check that N75 and then go from thier..