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post #61 of 80 Old 25th July 2007, 03:19 AM
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Originally Posted by BD 997 View Post
who sells Arqray? Anyone here buy this exhaust?
http://www.arqray.com/store/bmw/e60_m5/ From the website, it doesn't have a blue burned tip like I expected and I think this is ss version, not Ti.
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post #62 of 80 Old 25th July 2007, 03:33 AM
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post #63 of 80 Old 25th July 2007, 03:37 AM Thread Starter
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post #64 of 80 Old 25th July 2007, 06:02 AM
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I took pictures of the Arqray before, but it had the standard stainless tips.

https://www.m5board.com/vbulletin/showthread.php?t=68228
What shop is that?

Arqray sells it on their US website, but at the ridiculous price of $3K+.

Bluewave is cheaper by a bit, but I think you'll have to email them and hope someone speaks english.

2006 BMW E60 M5 SG/IR/Al
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post #65 of 80 Old 25th July 2007, 07:32 AM Thread Starter
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What shop is that?

Arqray sells it on their US website, but at the ridiculous price of $3K+.

Bluewave is cheaper by a bit, but I think you'll have to email them and hope someone speaks english.
It's a hop, skip, and jump from you there in Irvine. It's at Sector 111.
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post #66 of 80 Old 25th July 2007, 08:17 AM
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It's a hop, skip, and jump from you there in Irvine. It's at Sector 111.
Hot damn, I thought they only had Elise stuff. Thanks.

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post #67 of 80 Old 30th July 2007, 08:14 AM
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Originally Posted by NobleM400 View Post
At idle, 20" from tip, 45 degree angle, peak measurement:

Cold: 91 dB
Hot: 74 dB

Haven't had a chance to try 5600RPM yet though.

The RS decibel meters are about $30 or so, though the new digital ones are $50.

http://www.radioshack.com/product/in...ductId=2103667
FYI, today I have a chance to measure the sound on Tubi Rumore(just section3), and here are the number,

I wonder whether anyone has the number for Tubi Regular
Idle=97dBA
[email protected](3/4peak)
[email protected](peak)

Those measurement were done at 20" away from the tip with 45 degree angle.

Last edited by keang24; 30th July 2007 at 08:17 AM.
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post #68 of 80 Old 30th July 2007, 08:23 AM Thread Starter
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FYI, today I have a chance to measure the sound on Tubi Rumore(just section3), and here are the number,

I wonder whether anyone has the number for Tubi Regular
Idle=97dBA
Is that cold or warm?

That's quite a bit for just section 3.
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post #69 of 80 Old 30th July 2007, 08:56 AM
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Is that cold or warm?

That's quite a bit for just section 3.
That's warm. I was surprise too, but we did two measurements from two people. I gave the owner("UberCar") my sound measurement, and he will try to measure at cold start when he has a chance. I bought the digital one from Radio Shack as you referenced last time.
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post #70 of 80 Old 30th July 2007, 09:15 AM Thread Starter
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That's warm. I was surprise too, but we did two measurements from two people. I gave the owner("UberCar") my sound measurement, and he will try to measure at cold start when he has a chance. I bought the digital one from Radio Shack as you referenced last time.
Wow, I thought that was cold, since that's already much more than the Dixis + Eisenmann when cold, a full sections 1+2+3 setup.

Comparing warm to warm, that's a 23dB difference, that's over 10x the sound pressure, and over 4x the perceived loudness.

Surprising.
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