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11-13-2009, 02:12 PM | #47 | |
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Last edited by Periokid; 11-13-2009 at 03:50 PM.. |
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11-13-2009, 02:25 PM | #48 | |
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Cant wait to see how it turned out! Great work and effort, man
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11-13-2009, 07:54 PM | #53 |
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Ya!!! They sure are! I really wanna hear what sounds on take off!
Sounds pretty good so far. Nice backfire!
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Custom Exhaust Project: Bates Valvetronic exhaust: http://www.m3post.com/forums/showthread.php?t=253661 -- Exhaust Mod pics in here: http://www.flickr.com/photos/40236795@N03/
DON'T BUY Race Ready Performance electronic cutout valves. Here's why: http://www.m3post.com/forums/showthr...40#post9589740 |
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11-13-2009, 10:11 PM | #55 |
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11-14-2009, 04:25 AM | #56 |
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Sounds like Meisterschaft HP Touring
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07 M6 blk/blk, Racing Dynamics RS58 stroker with custom ECU tune, Primary cat bypassed+Akrapovic Evolution exhaust, BMC air filters, RPI air scoops, H&R springs, Dinan FRC & rear sway bar, 20" AC Schnitzer V
08 E92 M3 sparkling graphite/red, Competition pack, Innotech exhaust |
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11-14-2009, 12:18 PM | #57 |
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OK, Change of plans. After yesterday's test run, I decided to unwrap the two smaller exposed sections. I think the system needs some absorption. I clamped down the wrap on the pipes that have the larger amount of perforations. I'll re-stuff the chambers with absorption material and see how it goes.
Last edited by Periokid; 01-26-2015 at 11:12 AM.. |
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11-14-2009, 01:48 PM | #59 |
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I just finished the videos. I think I got what I was looking for.
By keeping the smaller set of perforations and re-stuffing the chambers, the exhaust is still MUCH louder but not insane like it was before. Videos are processing as I type this. |
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11-14-2009, 02:15 PM | #60 |
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Here you go... I recorded at different angles. I noticed that the recording sound changes a lot when the camera is in different locations.
Last edited by Periokid; 01-26-2015 at 11:14 AM.. |
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11-14-2009, 02:49 PM | #61 |
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Dude that sounds really good IMO! Good job! You gotta do a final summary of your work. Judging by your plates and your name...I'll take a shot in the dark here. You're a Periodontist?
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11-14-2009, 02:59 PM | #62 |
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Sounds a bit too much like a pushrod V8 at certain angles and rpm, rather than the technological marvel that it is, but surprisingly, better than most aftermarket exhausts I've heard. Not bad for a relatively simple procedure .
Hey, better loose the duct tape if you plan to take it for a ride man; you'll never be able to remove it afterwards. Good job. Curious about the volume/drone inside the car. Keep us posted. |
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11-14-2009, 03:15 PM | #64 | |
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Last edited by Periokid; 11-14-2009 at 04:38 PM.. |
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