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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 10-25-2012, 07:03 PM   #1
The_W_95
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Air intake?

So there's a Hyundai genesis around town and it's got some kind of air intake I've been told that its the air intake... It has a very distinct sound. Almost like a hissing. It revs up then hisses and then revs ups and hisses, etc. anybody know what this may be or if its even an intake or something else?...
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Old 10-25-2012, 09:59 PM   #2
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sounds like an intake, why do you care?
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Old 10-25-2012, 10:00 PM   #3
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It sounds amazing and wanted to know exactly wat it was and if there was one for an e46
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Old 10-25-2012, 10:09 PM   #4
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All cars have intake...
Cold Air intake will typically hiss, then rev.
Not rev then hiss.....sounds like a blow off the way you're describing it.
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Old 10-25-2012, 10:11 PM   #5
The_W_95
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I just don't know much about intakes so I figured I'd ask on here
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Old 10-25-2012, 10:17 PM   #6
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It is probably a turbo blow off valve. It releases the boost pressure when you let off the gas. Most oem ones are very quiet,but you can R!ce it up...I mean change it out to make different sounds. Doing that is an attempt to mimic serious high performance high boost engines.

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Old 10-26-2012, 12:22 AM   #7
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Genesis turbo BOV. Nothing to write home about. And no...you can't get one for your bone stock e46.
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Old 10-26-2012, 02:01 PM   #8
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Genesis turbo BOV. Nothing to write home about. And no...you can't get one for your bone stock e46.
Yes he can.

http://www.akamoto.co.uk/dump-valve.asp

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Old 10-29-2012, 01:39 PM   #9
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Nice....I was going to suggest recording the BOV noise on to all 99 tracks of a CD-R...with the radio up really loud you could time it just right with the track skip button as you let off the accelerator.
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Old 10-30-2012, 11:20 AM   #10
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Why would you put a fake one on?!?! That's just asking for it
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Old 10-30-2012, 03:29 PM   #11
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Why would you put a fake one on?!?! That's just asking for it
You're the one asking the question...

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Old 10-30-2012, 03:40 PM   #12
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I asked what it was not a fake one. Just saying
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Old 10-30-2012, 03:49 PM   #13
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It's the turbo blow off valve.
Someone had a genesis at my last autocross and it sounded like it was eating squirrels. Awesome.
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