K04 issues solved! Solution inside.
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Joined: Dec 2000
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K04 issues solved! Solution inside.
If you recall, I was having problems with my new K04 setup cutting all power around 5500rpm. All logging and testing that I did couldn't seem to isolate it to any certain thing. Having ruled out that the ECU was requesting that it cut power, I swapped out the BPV. Nope. New MAF. Nope. It was misfiring on cyl #4, but I replaced that coilpack and that went away.
So I pulled off the turbo intake hose and found that it was deformed over time into more of an oval shape near the turbo inlet than a circle. Under the newfound airflow of the K04, it was sucking itself shut, and therefore killing all the power until I lifted and allowed the vacuum in the hose to go down. So I took about 15 thick plastic zip ties, and wrapped the hose tightly. Yahtzee! Pulls much harder than before and smacks the 7100rpm limiter right in the face. There's a U-turn that I have to make to enter my apartment complex, and it has no problem smoking all 4 wheels as it slides around the corner. Beautiful stuff.
I'm like a little kid now, after a month of dealing with weird quirks and problems with the new turbo, I finally have it running right. Ordered the APR silicone hoses to combat this problem in the future, and now its time to head to Jacksonville and get the PC-16 setup dialed in. Thanks everyone for your help!<ul><li><a href="https://forums.audiworld.com/a4/msgs/2405241.phtml">link to old post...</a></li></ul>
So I pulled off the turbo intake hose and found that it was deformed over time into more of an oval shape near the turbo inlet than a circle. Under the newfound airflow of the K04, it was sucking itself shut, and therefore killing all the power until I lifted and allowed the vacuum in the hose to go down. So I took about 15 thick plastic zip ties, and wrapped the hose tightly. Yahtzee! Pulls much harder than before and smacks the 7100rpm limiter right in the face. There's a U-turn that I have to make to enter my apartment complex, and it has no problem smoking all 4 wheels as it slides around the corner. Beautiful stuff.
I'm like a little kid now, after a month of dealing with weird quirks and problems with the new turbo, I finally have it running right. Ordered the APR silicone hoses to combat this problem in the future, and now its time to head to Jacksonville and get the PC-16 setup dialed in. Thanks everyone for your help!<ul><li><a href="https://forums.audiworld.com/a4/msgs/2405241.phtml">link to old post...</a></li></ul>
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Joined: Sep 2002
Posts: 39,999
Likes: 1
From: NC
Wow, way to go man. I'm glad to hear that's all the trouble was
maybe it's time for an upgraded hose. I'll have my K04 in next weekend, so if I have power issues like you did, I'll know what to check. Thanks for updating us.
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