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BMW 3-Series (E90 E92) Forum
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30ff only at wot
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05-17-2019, 11:06 PM | #1 |
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30ff only at wot
Was at the strip tonight making some runs. When I first got there I had 30ff pop up. Check some vacuum lines. Found 1 rubber one broke. Did a poor mans repair with some duct tape because that's all I had on me at the moment. Anyways it fixed it. No longer leaking and car ran good all evening. Went to leave the track and now my code is back under heavy acceleration. I checked the same hose and it's still sealed up pretty solid. On my mhd monitor. I'm only getting about 13psi in boost. Was getting 17psi all evening. Anywhere else I should be looking for boost leak?
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05-18-2019, 06:58 AM | #2 | |
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Drives: 2007 Black/Black 335i e90
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Location: Holly, MI
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Quote:
https://www.verociousmotorsports.com...cuum-Hose-Kits If that doesn't cure your issues, start with gaskets at the various connection points along the Intake system. |
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05-18-2019, 07:25 AM | #3 | ||
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05-18-2019, 07:53 AM | #5 |
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Drives: 2007 Black/Black 335i e90
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05-18-2019, 08:09 AM | #6 |
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The only difficult ones are the ones going to the wastegate actuators, but I have large arms and hands and I was able to do it. Patience, patience, patience.
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05-18-2019, 10:44 AM | #7 |
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Alright guys appreciate the help. I'm going to get out there today and see what I find. I'm hoping the charge pipe hasn't taken a crap on me. I havnt had the funds to get the upgraded one yet
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05-18-2019, 11:19 AM | #9 |
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Drives: 2007 Black/Black 335i e90
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There's a trick for the front turbo. You take a small piece of solid, copper wire and insert it into the wastegate nipple & then slide the new vacuum line over the copper wire onto the nipple. Then pull the wire out.
Agreed, large hands & forearms will not help your cause with this DIY. |
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05-18-2019, 11:22 AM | #10 | |
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05-18-2019, 11:23 AM | #11 | |
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Drives: 2007 Black/Black 335i e90
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Quote:
https://www.cobbtuning.com/products/...ck-charge-pipe |
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05-18-2019, 11:31 AM | #12 | ||
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05-18-2019, 01:02 PM | #13 | |||
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It's pretty much the same setup. I have the Cobb & swear by it. |
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05-18-2019, 01:07 PM | #14 | ||||
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06-15-2019, 04:46 PM | #15 |
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I believe I finally found my source of leak today. I've been replacing vacuum lines and bought a new Charge pipe. All vacuum lines hold pressure when tested with a mighty vac. I do find that the boost solenoids bleed off slowly. Not sure if this is normal. At 25 hg they bleed off over 45 or so seconds down to 15 and kinds hover but still bleed slow. I test my stock diverted valves with a air compressor and regulator. I hsvnt been able to get over 13psi here lately. With the air compressor set at 20psi you can here the diverted valves blowing air through the tubes. So I pulled it down to 15 still does it. Once I set my regulator under 13 they quit bleeding. So I know for sure stock diverted valves are trash. But still not 100% on the boost solenoids
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