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08-04-2015, 05:18 PM | #1 |
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Loud whistle after bolt-on install
Hello 1addicts! I am not a very active member here but have been on many other car forums and i hope someone can help me out on here!
I recently installed bolt-ons on my 2010 N54 Mods: VRSF downpipes, ETS 7in FMIC, Stett charge pipe, aFE intake, JB4 Now since the install i am getting a rather loud whistle noise with even light throttle. Along with it i am getting engine codes 2FD2 and 9F52 both "no description" in JB4 The issue seems like a boost leak to me, but i can't find the cause anywhere. I have checked all of the couplers multiple time and the turbo inlet tube. I just know what else to check or what the root cause of these CELs might be Any advise would be appreciated! Thanks all |
08-04-2015, 05:36 PM | #2 |
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Have you checked the couplers on the intercooler? Esp the turbo site. It blew off a few times when I had my HPF intercooler. Also is the power output noticeably low?
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08-04-2015, 05:42 PM | #3 |
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Hello! thanks for the reply. I have checked all the couplers and from what i can see they are well attached on both sides. The sound appears to be coming from the passnger side so that was one of the first things i checked. None of them are blown off the pipes and i don't see/feel any gaps if i have someone rev the engine a bit.
Power does seem low for sure, also a bit laggier than normal although i really haven't gone past 3-4k rpms because of the unknown CEL's |
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08-04-2015, 05:47 PM | #4 |
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Strange. Stupid question: did you hook up the vacuum line back up to the BOV/DV?
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08-04-2015, 05:47 PM | #5 |
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Another note, the whistle noise seems to only happen when the car has load, so if i rev it a bit at idle i don't get the loud whistle, as soon as i pull away in first with just a bit of gas i can hear it though.
The issue started immediately after the bolt-on install, so i don't think its a bad turbo issue. |
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08-04-2015, 05:48 PM | #6 |
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Haha, yes i hooked that back up. The BOV is operating normally. i can hear its faintly (not nearly as loud as i expected, not even as loud as the stock valves vented to atmosphere currently) and i can see it open if reved at idle.
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08-04-2015, 05:50 PM | #7 |
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It's definitely a leak from what your explaining. It's just a matter of checking all the connectors. Check the Chargepipe to the throttle body, then to the fmic and so on. Also double check the small covers that go over where the DVs used to hook up to.
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08-04-2015, 05:52 PM | #8 | |
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I know i might sound like a jackass for asking online rather than looking, but i took off the under panel this weekend adn looked over all the connections, pushed the couplers and felt for how far they are overlapping the pipes and everything seems perfectly fine. I am running a TIAL bov on the stett pipe. I used to have one on my old car with quite an inciting whip crack sound. Maybe its becauses of my leak, but its fairly quite on this car compared to my old one :think: |
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08-04-2015, 05:56 PM | #9 | |
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08-04-2015, 05:58 PM | #10 | |
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I think the fact im leaking boost is why the BOV isn't as loud as it should be, now to find that damn leak :banghead: Those little caps wouldn't be the source of my real issue though. since they are before the air is compressed. |
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08-04-2015, 06:01 PM | #11 | |
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08-04-2015, 06:05 PM | #12 | |
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Thanks for your insight! i really appreciate it. |
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08-04-2015, 06:07 PM | #13 | |
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08-04-2015, 06:11 PM | #14 |
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Ive made/ used boost leak testers in the past. I live in an apartment complex and don't have an air compressor though.
Last edited by snizzletoff; 08-04-2015 at 06:17 PM.. |
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08-04-2015, 06:29 PM | #15 |
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When I first installed my Chargepipe it kept blowing off the throtte body. Finally just got vband clamps. Thats where most of the pressure is coming from and it's hard to see. It may appear attached bit there can be the smallest gap that will cause a leak.
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08-04-2015, 06:45 PM | #16 | |
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Maybe you mean T-bolt clamps haha? Mine came with them. |
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08-04-2015, 06:56 PM | #17 | |
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08-05-2015, 08:13 AM | #18 |
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New parts? If used, FMIC itself could be leaking.
Could be that your clamps aren't tight. If using stock DVs, they could have failed as well.
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08-05-2015, 02:08 PM | #19 | |
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Are the ETS units known for leaking after a few miles? It had about 5k miles on it when i purchased it. Looked to be in quite new condition. I don't have the stock DVs |
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08-05-2015, 02:42 PM | #20 | |
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08-05-2015, 02:49 PM | #21 |
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Yes, the whistle started the same day everything was installed. I didn't get a CEL for a few days so i honestly thought it was an expected sound with all of the new parts, however it always sounded out of place to me.
I hardly drive the car so it took me a few trips in it to finally get a CEL, now im trying to find out why. And to clarify, everything was installed all at one time. So its hard to guess what the cause is. I also replaced the sparkplugs the same day but i think that is unrelated haha. |
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08-05-2015, 06:37 PM | #22 | |
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