DIY: N75 replacement on ATW engine (others should be close to the same)
07-05-2005, 08:21 PM
#1
AudiWorld Super User
Thread Starter
DIY: N75 replacement on ATW engine (others should be close to the same)
<center><img src="https://www.audiworld.com/tech/pics/eng70-n75_valve_location.jpg"></center><p>
30mins install time/difficulty 3 because of tightness
the N75 is located in between the airbox and engine just above the turbo in the hose going towards the airbox.
make sure your engine is cold when replacing or some burns will accompany this replacement!
disconnect the plastic air filter connector from the air box and the front intake. remove 2 phillips screws and pull out the piece.
remove the crankcase breather filter (pancake filter or what ever its called) to have better access to the N75.
disconnect the cable by squeezing the silver security lock
now comes the fun part to remove those twist on clamps. i used a small end banding snip plier and pulled up on the clamp side that has the notches. the clamp basically lets loose and can be taken off.
remove all 3 clamps and pull the N75 out.
replace with the replacement and put everything back together as it was and secure with clamps. i dont think that zipties would hold up in a high heat environment so do that own your own risk. i have the hoses on there without any clips so far.
thats it!
058 906 283 F is the N75F valve
058 906 283 C is the N75C valve
part number stays the same only the last letter changes to the actual letter designation
went out for a test drive in the rain and i am spiking now at 18psi and run 16psi of boost with the giac chip. however the best part is that the boost comes on rather quickly now than before. im happy!
i got the valve from vwvortex member who upgraded his to the J valve. 25$ shipped with 4 day wait is not bad for the F version!
Search Terms
N75 replacement, N75 location, N75 problems, crimping clamp removal
30mins install time/difficulty 3 because of tightness
the N75 is located in between the airbox and engine just above the turbo in the hose going towards the airbox.
make sure your engine is cold when replacing or some burns will accompany this replacement!
disconnect the plastic air filter connector from the air box and the front intake. remove 2 phillips screws and pull out the piece.
remove the crankcase breather filter (pancake filter or what ever its called) to have better access to the N75.
disconnect the cable by squeezing the silver security lock
now comes the fun part to remove those twist on clamps. i used a small end banding snip plier and pulled up on the clamp side that has the notches. the clamp basically lets loose and can be taken off.
remove all 3 clamps and pull the N75 out.
replace with the replacement and put everything back together as it was and secure with clamps. i dont think that zipties would hold up in a high heat environment so do that own your own risk. i have the hoses on there without any clips so far.
thats it!
058 906 283 F is the N75F valve
058 906 283 C is the N75C valve
part number stays the same only the last letter changes to the actual letter designation
went out for a test drive in the rain and i am spiking now at 18psi and run 16psi of boost with the giac chip. however the best part is that the boost comes on rather quickly now than before. im happy!
i got the valve from vwvortex member who upgraded his to the J valve. 25$ shipped with 4 day wait is not bad for the F version!
Search Terms
N75 replacement, N75 location, N75 problems, crimping clamp removal
07-06-2005, 08:26 AM
#4
AudiWorld Super User
Thread Starter
boost will always drop with higher rpms. different n75 is to get boost somewhat quicker
other N75 valves will most likely require you to run a MBC manual boost controller so you dont run to much boost and make the ECU retard timing and all this stuff. the engine has to be optimized to run with higher boost. so just higher boost without the right programming wont do anything
Trending Topics
Thread
Thread Starter
Forum
Replies
Last Post
ChrisWB
A4 (B5 Platform) Discussion
5
04-13-1999 06:08 PM
