X47 and Mechanical BOV owners... help!

[fairplayinc]

I have an x47, MAP intake and Turbosmart symposer delete BOV. By blocking off the factory located dv, I have introduced the horrific off gas hum that you hear in the video below.

I have temporarily switched back to stock intake and now I don’t hear anything induction wise. I want to hear something, just not the sound of someone blowing over the top of a beer bottle.

For those that have x47 and mechanical BOV, what intake are you running? Have you eliminated that terrible off gas sound? TIA


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[fairplayinc]

https://youtu.be/i6R-F7Ceqh4


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[jeff]

All the answers to this problem can be solved by reading this thread:

http://www.fiestastforum.com/forum/threads/14395-X47-noise-diagnosis-ideas-Subtle-F-note

Read that you’re selling your DV+? Why did you decide that? Installing it eliminated this noise for me completely. Maybe you have the fake version, it might not work correctly. There is info somewhere about that.

Good luck!

 

[fairplayinc]

Selling because I went with a mechanical BOV. The DV+ works great, but going to a mechanical valve requires a block off plate in the stock location. Thanks for the link! I will review it.


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[fairplayinc]

Reviewed. The DV+ did exactly what the OP described in mine. But I need a solution that will work with a mechanical BOV. Thinking something not ram air like my previous MAP intake. Maybe Cobb or CPe? Anyone out there with x47 and mechanical BOV?


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[jeff]

Reviewed. The DV+ did exactly what the OP described in mine. But I need a solution that will work with a mechanical BOV. Thinking something not ram air like my previous MAP intake. Maybe Cobb or CPe? Anyone out there with x47 and mechanical BOV?


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What I was saying was I had the same noise as you do, but the GFB DV+ fixed it completely. I don't think the intake has anything to do with it, it's the valve. As soon as I put the X47 on my car I got the venting noise as in your video. As soon as I installed the DV+ it left, permanently.

Good luck.

 

[fairplayinc]

What I was saying was I had the same noise as you do, but the GFB DV+ fixed it completely. I don't think the intake has anything to do with it, it's the valve. As soon as I put the X47 on my car I got the venting noise as in your video. As soon as I installed the DV+ it left, permanently.

Good luck.

Thanks Jeff.

It was gone when I had mine too. And is gone after going back to stock intake. I’m hoping to get an intake that’s going to give me a little intake sound minus the “blowing over a beer bottle” sound.


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[jeff]

Thanks Jeff.

It was gone when I had mine too. And is gone after going back to stock intake. I’m hoping to get an intake that’s going to give me a little intake sound minus the “blowing over a beer bottle” sound.


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I don't think the intake has anything to do with the blowing beer bottle aka low rev venting noise. It's a Gb by the way if you are a musician. I think it's all the valve. I had a CP-E intake which is one of the louder ones, and there was zero noise even with that after installing the DV+.

A bit off topic but after installing the X47 last fall, combined with my big mouth intake and my CP-E I just found there to be too much intake noise for my liking. I swapped the CP-E for a RAMAIR setup and I can actually hear my engine and exhaust now, all that whooshing is gone and the whistle of the X47 is down to a minimum. It's really nice. I recorded a few logs and timing, boost, spool are all the same before and after. The RAMAIR isn't fancy but it works well. Temps are up maybe 1-2 degrees but I don't think that made any performance difference, airflow mass is right in line with the power I'm making. Adam my tuner looked at my logs and said there is no performance difference. The car feels the same. I'm very happy with the switch.

 

[fairplayinc]

I don't think the intake has anything to do with the blowing beer bottle aka low rev venting noise. It's a Gb by the way if you are a musician. I think it's all the valve. I had a CP-E intake which is one of the louder ones, and there was zero noise even with that after installing the DV+.

A bit off topic but after installing the X47 last fall, combined with my big mouth intake and my CP-E I just found there to be too much intake noise for my liking. I swapped the CP-E for a RAMAIR setup and I can actually hear my engine and exhaust now, all that whooshing is gone and the whistle of the X47 is down to a minimum. It's really nice. I recorded a few logs and timing, boost, spool are all the same before and after. The RAMAIR isn't fancy but it works well. Temps are up maybe 1-2 degrees but I don't think that made any performance difference, airflow mass is right in line with the power I'm making. Adam my tuner looked at my logs and said there is no performance difference. The car feels the same. I'm very happy with the switch.

I agree that it’s the valve, or in my case, lack of in stock location. The intake can mask it though. Which is what the stock intake does.

I will check out the RamAir unit. I want a little intake sound but want to avoid the Gb.

Thank you for your input! [emoji16]


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