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      02-18-2023, 09:05 AM   #1
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*new product launch* Valvetronic equal length exhaust

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The philosophy: Upon entering the exhaust market late in 2021 for the G8x platform we thank you for all the continued support of our exhaust configurations. This last year of development has taught us so much about how to build the best products for our customers around the world. Thank you to all of those who keep us accountable and challenge us to best serve the community. As the market catches up, it is time for us to take our next step and bring a new exhaust configuration to market for the G8x platform, this time with a twist. Enthusiasts from around the world have asked to have the “Soom” sound for themselves and we are proud to announce that this time is now.

The development: In April of 2022 our development began on a new exhaust configuration that would deliver that high pitch frequency. The solution, as similar to the F8x platform, is a true equal length design that perfectly equalizes the exhaust pulses from the engine in order for them to exit the exhaust at the exact same time. We will spare you the complicated calculations, but there is 12.21-inch difference in the exhaust length in the BMW G8x downpipes. With our exhaust developments we have designed a lengthening section that attaches to the shorter downpipe in order to perfectly equal out the lengths. After the downpipes are combined together the exhaust travels back in our traditional 3.5 inch single midpipe and flows into the revised rear section. This rear section features new valve construction and a new muffler casing in order to minimize drone and increase sound flexibility from valves open to valves closed.

The most interesting part of our development stemmed from our new found understanding of the differences from manual to automatic sound characteristics. Having tested this new exhaust configuration on both transmissions we are amazed at how different the two sound. Comparing the 6 speed manual to the 8 speed ZF, the automatic car revs climb so much faster in gear due to each ratio being tighter stacked. On a free rev while stationary, the high pitch sound is fully present, just as it is in Soom’s car. This discovery was truly fascinating.

The sound: As Soom’s car is widely praised for that unique sound, we are so proud that this setup sound is almost identical on a free rev. While driving that sound persists on the manual transmission cars all the way to the redline. On automatic cars, as the gear ratios are closer stacked, the sound is slightly more flat, but still extremely enjoyable through the entire rev range. With the valves open this setup is very aggressive, but with the valves closed you will forget you even put an exhaust on your G80.


We are very proud to bring an updated exhaust system to the community. The system will be available to be heard at BIMMER INVASION in Orlando Florida. If you are unable to hear the setup in person we invite you to enjoy this sound clip we have curated. We will be releasing more sound clips soon. If you are interested in getting your car setup with this system, preorders will be live on our website and through Valvetronic Designs Dealers. Original exhaust systems will still be available for purchase as we have these units in stock and ready for immediate dispatch at a sizeable discount. The revised system will be available in both T304 stainless steel or titanium. Let us know your thoughts or if you have any questions. We are here to help!

More info here:
https://valvetronic.com/products/bmw...40602098860068

Sound clips!
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      02-18-2023, 11:11 AM   #2
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very nice. both in looks and sound.
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      02-18-2023, 05:34 PM   #3
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Sounds great. Do you have an authorized dealer in so cal?
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      02-19-2023, 08:09 AM   #4
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Sounds good but need to hear with stock DPs
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      02-19-2023, 10:41 AM   #5
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Quote:
Originally Posted by RosalieeeV View Post
Sounds great. Do you have an authorized dealer in so cal?

Indeed we do, check out dealer map here:

https://valvetronic.com/pages/sca-store-locator
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      02-19-2023, 10:49 AM   #6
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Quote:
Originally Posted by anakratis View Post
Sounds good but need to hear with stock DPs
here is a clip of the revs with stock downpipes, we will be releasing another longer video soon. The sound is super smooth with OEM downpipes

https://youtube.com/shorts/8Le6DNqMUvY?feature=share
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      02-19-2023, 10:50 AM   #7
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additionally, for those interested, this is our original design compared to the new setup!
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      02-19-2023, 03:54 PM   #8
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How does this compare in volume to the single pipe version?
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      02-19-2023, 04:24 PM   #9
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Quote:
Originally Posted by LBBDrew View Post
How does this compare in volume to the single pipe version?
volume is the same, it is still quite aggressive and enjoyable
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      02-20-2023, 09:11 AM   #10
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Sounds healthy letís just hope this is isnít like your first go with the 3 prototypes. No malicious intent behind the comment as Iíve already committed and bought an entire system already. Just genuinely hope it sounds like it does in the video.
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      02-20-2023, 09:32 AM   #11
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Quote:
Originally Posted by Leophay View Post
Sounds healthy letís just hope this is isnít like your first go with the 3 prototypes. No malicious intent behind the comment as Iíve already committed and bought an entire system already. Just genuinely hope it sounds like it does in the video.
Well said, We understand we have made some mistakes in the past but are glad that we learned from them and have used this previous faults to do our dev work right
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      02-20-2023, 09:45 AM   #12
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I would love to hear what this sounds like with a a stock backbox & DP with 200 cell hi-flow cats - I know you've done a video on decat and stock DP already... might be pushing my luck here

I guess it'll sound somewhere in between the two?
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      02-20-2023, 10:25 AM   #13
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Quote:
Originally Posted by Valvetronic Designs View Post
volume is the same, it is still quite aggressive and enjoyable
I have a full ti cat back from you guys that I purchased back in September. How does the sound of the new system compare? Are there any other differences?
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      02-20-2023, 11:48 AM   #14
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Quote:
Originally Posted by m3cs76 View Post
I have a full ti cat back from you guys that I purchased back in September. How does the sound of the new system compare? Are there any other differences?
Judge for yourself itís hard to describe in words how something sounds especially in comparison to a similar product.

Best thing You can do is take a quick video from similar angles of your car and then toss headset on and compare your video to theirs.
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      02-20-2023, 12:07 PM   #15
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Quote:
Originally Posted by Leophay View Post
Judge for yourself itís hard to describe in words how something sounds especially in comparison to a similar product.

Best thing You can do is take a quick video from similar angles of your car and then toss headset on and compare your video to theirs.
It's nearly impossible to get a realistic reproduction of sounds in an internet clip due to variations in mics, speakers, etc. This is why I asked for a subjective opinion from someone (the manufacturer) with intimate first hand knowledge of the sounds of both systems side by side.
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      02-20-2023, 01:27 PM   #16
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Quote:
Originally Posted by m3cs76 View Post
It's nearly impossible to get a realistic reproduction of sounds in an internet clip due to variations in mics, speakers, etc. This is why I asked for a subjective opinion from someone (the manufacturer) with intimate first hand knowledge of the sounds of both systems side by side.
You are absolutely right in asking they should be a good judge with first hand experience, I retract my original asinine statement but, there was some validity to whether there are small differences in mics/speakers you are going to be the best judge at the end of the day. Letís wait for them to chime in and see if they can tell you the differences. I admit I am slightly curious now, as to what they might say with regards to the differences in sound. Just curious are you dissatisfied with the current setupís sound or just looking to possibly change up if itís a noticeable tone/sound difference?
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      02-20-2023, 01:31 PM   #17
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Quote:
Originally Posted by Leophay View Post
You are absolutely right in asking they should be a good judge with first hand experience, I retract my original asinine statement but, there was some validity to whether there are small differences in mics/speakers you are going to be the best judge at the end of the day. Letís wait for them to chime in and see if they can tell you the differences. I admit I am slightly curious now, as to what they might say with regards to the differences in sound. Just curious are you dissatisfied with the current setupís sound or just looking to possibly change up if itís a noticeable tone/sound difference?
I wouldn't say I'm dissatisfied, but I'd be open to maybe changing out the midpipe if I got a deeper tone. At the end of the day it is only a six cylinder so you're never going to be able to make it sound like an 8.
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      02-20-2023, 04:52 PM   #18
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Quote:
Originally Posted by m3cs76 View Post
I have a full ti cat back from you guys that I purchased back in September. How does the sound of the new system compare? Are there any other differences?
In regards to the sound differences it's not a huge transformation, rather a more subtle update to certain frequencies. With this equal length configuration, the exhaust is more peaky meaning it has a little bit more of an exotic sound. The set up is just as aggressive throughout the rev range while having a little bit more of that VQ/ Equal length S55 type sound. Soon we will put both cars together with the exact same configuration to show off the differences so everyone can hear in a video.
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      02-21-2023, 03:07 AM   #19
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Guys, is there a way to get rid of all the farts and crackles on these? Or are owners stuck with them, no matter which exhaust they choose?
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      02-21-2023, 04:07 AM   #20
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Quote:
Originally Posted by GS1 View Post
Guys, is there a way to get rid of all the farts and crackles on these? Or are owners stuck with them, no matter which exhaust they choose?
Sounds good.

The farts and crackles in the video are mostly the tune.
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      02-21-2023, 04:10 AM   #21
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Quote:
Originally Posted by GS1 View Post
Guys, is there a way to get rid of all the farts and crackles on these? Or are owners stuck with them, no matter which exhaust they choose?
You can remove them via a tune - I think the Leib CAN module can also get rid of them on iDrive 7 cars (not sure about iDrive 8).

Of course you can also use the M Sound Control button to switch them off (but this also reduces how much the valves opens by - so results in a quieter exhaust - not an issue if you run valve controller)
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      02-21-2023, 06:12 AM   #22
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Quote:
Originally Posted by Sbm007 View Post
You can remove them via a tune - I think the Leib CAN module can also get rid of them on iDrive 7 cars (not sure about iDrive 8).

Of course you can also use the M Sound Control button to switch them off (but this also reduces how much the valves opens by - so results in a quieter exhaust - not an issue if you run valve controller)
Do u have this module? Iím thinking to get it
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