Boost Controller Problems -->
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AudiWorld Super User
Joined: Jan 2003
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Boost Controller Problems -->
Well I used to have an APR ECU and since the ecu got fried it f*cked up my whole car. The car was sitting in the shop for a month and they decided to order me a new ecu but not chipped. So for the past 2 months ive been riding around in a stock mode but it wasnt fast anymore.
So this morning I decided to put in the manual boost controller to see if it worked (When I tried this on the APR ecu its didnt work at all). So I set it for 15 pounds and I went for a drive. I spiked at 15 and then the hose came off because I didnt sercure it until it worked. So I went back and sercured it and it went for another drive. It spiked at 15 and then dropped to 4 pounds and then back to 15 and thn back to 4 and so on....
Whats going on?
<img src="http://pictureposter.audiworld.com/50091/img_602.jpg">
So this morning I decided to put in the manual boost controller to see if it worked (When I tried this on the APR ecu its didnt work at all). So I set it for 15 pounds and I went for a drive. I spiked at 15 and then the hose came off because I didnt sercure it until it worked. So I went back and sercured it and it went for another drive. It spiked at 15 and then dropped to 4 pounds and then back to 15 and thn back to 4 and so on....
Whats going on?
<img src="http://pictureposter.audiworld.com/50091/img_602.jpg">
AudiWorld Uber User
Joined: Dec 2000
Posts: 53,281
Likes: 2
I can't really tell what you have going on there.....>
Here's the hook-up. Ignore the relief and one way in your case
<img src="http://images5.fotki.com/v54/photos/7/7305/191484/bmschematiccopy-vi.jpg">
Boost source (from the turbo outlet pipe) goes into the Valve. The output goes back to the same port you just removed this from on the N75. Is your N75 plugged in right? Make sure the arrows on the valve follow the airflow direction. And what do you mean you set it to 15 PSI? YOu can only set these on the car and running. Turn it off (all the way clockwise, open 3 turns, hook up correctly and try again....Did you put a plug in the port on the other side of that valve?
<img src="http://images8.fotki.com/v132/photos/7/7305/191484/turbo_schematicvicopy-vi.jpg">
<img src="http://images1.fotki.com/v12/photos/7/7305/149094/n75a-vi.jpg">
<img src="http://images5.fotki.com/v54/photos/7/7305/191484/bmschematiccopy-vi.jpg">
Boost source (from the turbo outlet pipe) goes into the Valve. The output goes back to the same port you just removed this from on the N75. Is your N75 plugged in right? Make sure the arrows on the valve follow the airflow direction. And what do you mean you set it to 15 PSI? YOu can only set these on the car and running. Turn it off (all the way clockwise, open 3 turns, hook up correctly and try again....Did you put a plug in the port on the other side of that valve?
<img src="http://images8.fotki.com/v132/photos/7/7305/191484/turbo_schematicvicopy-vi.jpg">
<img src="http://images1.fotki.com/v12/photos/7/7305/149094/n75a-vi.jpg">
New Member
Joined: Nov 2003
Posts: 110
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i know exactly why.
i had same problem with my 180.
you set it too high.
the max for 180 is 14.5psi.
no more, it will hold 14.5psi until 4500-5000. and it will go back to 12 then 10 and 8psi.
anything more than 14.5psi, the boost jumps up and down. i think ecu cuts it.
you have to clear the over boost code every time you set it for too high boost.
you set it too high.
the max for 180 is 14.5psi.
no more, it will hold 14.5psi until 4500-5000. and it will go back to 12 then 10 and 8psi.
anything more than 14.5psi, the boost jumps up and down. i think ecu cuts it.
you have to clear the over boost code every time you set it for too high boost.
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