Would there be interest in an affordable Valvetronic Exhaust? GROUP BUY OPENED!

BayE30 · 06-28-2018, 10:06 AM

SUB'D.

msan · 06-28-2018, 10:14 AM

I'd like to meet up in WLA to hear it. I have an Arka EVO right now to compare sounds. I'll PM you.

buzz367 · 06-28-2018, 11:23 AM

Can we get at least a phone video?

Bomiz · 06-28-2018, 01:09 PM

Quote:

Originally Posted by Deebo

This looks incredible, and like others I'm shocked at how fast you've progressed through this. Were you able to grab the weight of it?

when I weighed it on a normal scale (ones we use efor our weight) it was about 40lbs. So if I remember correctly... stock is 55lbs?

I'll get some videos of the exhaust today! I appreciate all the comments!

also there's a couple extra photos in the album on Flickr of the install

Bomiz · 06-28-2018, 02:35 PM

Also please follow my new Instagram page @bomizm3
I'm going to try and get pics/vids on there before it hits the forums.

jdamore · 06-28-2018, 03:07 PM

I can't wait to hear this!

How does the control module control the actuators? For example, the valves are normally closed and the module sends 12v to open them? Reason I ask is because I would prefer to discard the wireless setup and wire in a (hidden) toggle switch.

Bomiz · 06-28-2018, 03:16 PM

Quote:

Originally Posted by jdamore

I can't wait to hear this!

How does the control module control the actuators? For example, the valves are normally closed and the module sends 12v to open them? Reason I ask is because I would prefer to discard the wireless setup and wire in a (hidden) toggle switch.

I Believe so, but i'll double check with the manufacturer. I'll also look into a wired toggle solution. I know with the other electronic valves (the QTP ones and the ones evolve uses) you can implement a toggle.

Bomiz · 06-28-2018, 10:27 PM

Video I took with my phone.

Should get the next sample within the next week, probably less.

b4hand · 06-28-2018, 10:41 PM

Oh lawd that is quite loud! I like it!!

Bomiz · 06-28-2018, 10:42 PM

Quote:

Originally Posted by b4hand

Oh lawd that is quite loud! I like it!!

remember I'm catless

Aktavate · 06-28-2018, 11:51 PM

Kind of surprised how quiet it is closed even catless but I like it, quiet can be quiet and loud can be ridiculous depending on upstream components.

GORDON.M3 · 06-29-2018, 12:27 AM

Quote:

Originally Posted by Bomiz

Video I took with my phone.

Should get the next sample within the next week, probably less.

Sounds like a Kreissieg but a tad lower tone.

Bomiz · 06-29-2018, 12:59 AM

Quote:

Originally Posted by GORDON.M3

Quote:

Originally Posted by Bomiz

Video I took with my phone.

Should get the next sample within the next week, probably less.

Sounds like a Kreissieg but a tad lower tone.

Sounds like he was revving during a cold start lol

Edit: Listened to a couple vids of Kreissieg, opened it's kind of similar, but closed it's like driving stock

Tony B · 06-29-2018, 05:21 AM

Quote:

Originally Posted by Bomiz

Video I took with my phone.

Should get the next sample within the next week, probably less.

The dog seems pretty impressed....

Closed sounds almost like an E46 M3 (which is not a bad thing so long as the bass is there, too).

Dlpfcb · 06-29-2018, 07:15 AM

Hmmm love the sound when its open. Closed eeehhh its ok. We all Definetely need to hear it with Oem mid pipe and not catless.

Ngilbe36 · 06-29-2018, 07:44 AM

^^
The sound when open is perfect! When it is closed it needs a little something. It almost sounds a little tinny. I am getting more and more interested by the day.
As you have progressed the design, do you have a better idea on price?

tdott · 06-29-2018, 07:45 AM

Great work making this happen!

Any plans to dyno before / after, open / closed?

Dlpfcb · 06-29-2018, 09:02 AM

Definetely interested and curious as well if you have settled on a price range.

WickedE93 · 06-29-2018, 02:29 PM

Sounds amazing with the valves open

Bomiz · 06-29-2018, 02:38 PM

I'll get estimated price soon, still working on some minor things.

I'll try to get the drive by videos asap as well

msan · 06-29-2018, 02:44 PM

Anyway to get the flapper painted black so you don't see it as much when closed?

Or maybe it will be coated black by the exhaust eventually...

Open sounds great for open... not sure of the closed sound. I'll check it out in person. iPhones don't capture bass very well

L4ces · 06-29-2018, 03:02 PM

Some suggestions for doing the drive-by
- If WOT, please don't let off in front of the camera, let off a bit after passing the camera.
- Do some 2500, 3000, 45000 passes.
- Perform a deceleration pass
- remember when approaching the camera we tend to hear mostly induction noise as the exhaust noise travels mostly away from the camera.

Same with in-cabin which where we live anyway.

- Final note: WOT imho is the least pleasant sound and most exhausts sound similar at WOT.

I respect your time and efforts so anything you provide will be appreciated.

06-28-2018, 10:06 AM	#111
BayE30 Lieutenant Colonel 1341 Rep 1,881 Posts Drives: 2011.75 E90 M3 ZCP Join Date: Jul 2014 Location: San Francisco iTrader: (5)	SUB'D. __________________ I am never able to post pictures on forums, all my pics are on IG @baye30 https://www.instagram.com/baye30/ Current Garage - [2011 E90 M3 ZCP] [2005 E53 X5 3.0 Sport] [1988 E30 325IS 24V]
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06-28-2018, 10:14 AM	#112
msan Major 403 Rep 1,171 Posts Drives: 2011 E90 M3 / 2012 X5 35i M Sp Join Date: May 2015 Location: Los Angeles, CA iTrader: (16)	I'd like to meet up in WLA to hear it. I have an Arka EVO right now to compare sounds. I'll PM you.
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06-28-2018, 11:23 AM	#113
buzz367 Private First Class 33 Rep 135 Posts Drives: E90 BMW M3 Join Date: Nov 2013 Location: San Diego CA iTrader: (0)	Can we get at least a phone video?
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06-28-2018, 02:35 PM	#115
Bomiz Captain 322 Rep 824 Posts Drives: SS E92 M3 Join Date: Jun 2012 Location: Los Angeles iTrader: (2)	Also please follow my new Instagram page @bomizm3 I'm going to try and get pics/vids on there before it hits the forums.
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06-28-2018, 03:07 PM	#116
jdamore Captain 433 Rep 855 Posts Drives: 2008 e92 M3 Join Date: May 2013 Location: New Jersey iTrader: (4)	I can't wait to hear this! How does the control module control the actuators? For example, the valves are normally closed and the module sends 12v to open them? Reason I ask is because I would prefer to discard the wireless setup and wire in a (hidden) toggle switch. __________________ -- 08 JB e92 6MT ///M3 ESS VT2-625 --
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06-28-2018, 10:27 PM	#118
Bomiz Captain 322 Rep 824 Posts Drives: SS E92 M3 Join Date: Jun 2012 Location: Los Angeles iTrader: (2)	Video I took with my phone. Should get the next sample within the next week, probably less.
	Appreciate 5 b4hand661.00 Aktavate245.50 L4ces337.00 dreamspeed260.00 itsnotq49.00 Quote

06-28-2018, 10:41 PM	#119
b4hand Captain 661 Rep 966 Posts Drives: 2011 ZCP M3 Join Date: Jul 2017 Location: Austin, TX iTrader: (3)	Oh lawd that is quite loud! I like it!!
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06-28-2018, 11:51 PM	#121
Aktavate Second Lieutenant 246 Rep 270 Posts Drives: Red Join Date: May 2017 Location: Reno / SFBA iTrader: (0) Garage List 2011 E90 M3 [0.00] 2002 911 Turbo [0.00]	Kind of surprised how quiet it is closed even catless but I like it, quiet can be quiet and loud can be ridiculous depending on upstream components.
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06-29-2018, 07:15 AM	#125
Dlpfcb Captain 483 Rep 647 Posts Drives: AW E92 M3 Join Date: Aug 2017 Location: Idaho iTrader: (1)	Hmmm love the sound when its open. Closed eeehhh its ok. We all Definetely need to hear it with Oem mid pipe and not catless.
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06-29-2018, 07:44 AM	#126
Ngilbe36 Captain 1619 Rep 880 Posts Drives: 2011 E90 M3, 2019 F150 Join Date: Mar 2017 Location: MI iTrader: (0) Garage List 2011 BMW E90 M3 [0.00]	^^ The sound when open is perfect! When it is closed it needs a little something. It almost sounds a little tinny. I am getting more and more interested by the day. As you have progressed the design, do you have a better idea on price?
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06-29-2018, 07:45 AM	#127
tdott Brigadier General 3938 Rep 3,980 Posts Drives: M3 Join Date: Nov 2010 Location: South FL / 6ix iTrader: (4)	Great work making this happen! Any plans to dyno before / after, open / closed? __________________ N/A S65 Headers Before/After Dyno Results
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06-29-2018, 09:02 AM	#128
Dlpfcb Captain 483 Rep 647 Posts Drives: AW E92 M3 Join Date: Aug 2017 Location: Idaho iTrader: (1)	Definetely interested and curious as well if you have settled on a price range.
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06-29-2018, 02:29 PM	#129
WickedE93 Major 224 Rep 1,131 Posts Drives: White E93 M3 Join Date: Feb 2014 Location: Pico Rivera iTrader: (2)	Sounds amazing with the valves open __________________ Gintani Supercharger/ Gintani x-pipe/ Challenge rear muffler section powder coated black/ Alpine DCT Tune & Coding/ Republic Werkz modded headlights and tail lights/ Gloss black cosmetics, hood vents, and mirror caps/ Piano Black interior trim, Roof painted black by Ranz Motorsports/ Velos Designwerkz Solo V's/ KW V3's/ MRF Solid sub-frame bushings W/ Delrin Diff bushings/ Duke Dynamics CSL Trunk/ Euro bumper/ Full Dinmann aero kit.
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06-29-2018, 02:38 PM	#130
Bomiz Captain 322 Rep 824 Posts Drives: SS E92 M3 Join Date: Jun 2012 Location: Los Angeles iTrader: (2)	I'll get estimated price soon, still working on some minor things. I'll try to get the drive by videos asap as well
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06-29-2018, 02:44 PM	#131
msan Major 403 Rep 1,171 Posts Drives: 2011 E90 M3 / 2012 X5 35i M Sp Join Date: May 2015 Location: Los Angeles, CA iTrader: (16)	Anyway to get the flapper painted black so you don't see it as much when closed? Or maybe it will be coated black by the exhaust eventually... Open sounds great for open... not sure of the closed sound. I'll check it out in person. iPhones don't capture bass very well
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06-29-2018, 03:02 PM	#132
L4ces Major 337 Rep 1,489 Posts Drives: 2008 E92 M3 Alpine White Join Date: Aug 2010 Location: NJ - NY iTrader: (0) Garage List 2008 M3 [0.00]	Some suggestions for doing the drive-by - If WOT, please don't let off in front of the camera, let off a bit after passing the camera. - Do some 2500, 3000, 45000 passes. - Perform a deceleration pass - remember when approaching the camera we tend to hear mostly induction noise as the exhaust noise travels mostly away from the camera. Same with in-cabin which where we live anyway. - Final note: WOT imho is the least pleasant sound and most exhausts sound similar at WOT. I respect your time and efforts so anything you provide will be appreciated.
	Appreciate 0 Quote

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