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      09-10-2018, 11:27 AM   #1
Suspence
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My new Bomiz Valvetronic Exhaust

Just put on the new Bomiz valvetronic exhaust, here's my video at the bottom.

Overall, the car sounds super violent and loud. It really opens up the car and gives the car the sound that I was looking for. You can hear full pulls in the video with exhaust open and valves closed. Here's a few pics I snapped at StudioRSR getting the install done.



















www.instagram.com/bomizM3

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      09-11-2018, 10:07 PM   #2
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Saw the video today, the car sounds so mean! I'm pretty pumped for the release of the exhaust, I'm trying to wait until this comes out but I need an exhaust so bad. Car looks great too man.
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      09-12-2018, 10:28 AM   #3
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Originally Posted by brorannosaurus View Post
Saw the video today, the car sounds so mean! I'm pretty pumped for the release of the exhaust, I'm trying to wait until this comes out but I need an exhaust so bad. Car looks great too man.
Thanks dude! You won't be disappointed. The setup is NUTS, really wakes up the car. Thanks for the kind words! Post a video when you get it!!
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      09-14-2018, 08:15 PM   #4
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Been follow you and your car build on YouTube love it.
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      09-15-2018, 01:41 AM   #5
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Safe to run a valved exhaust with a SC installed?
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      09-15-2018, 11:04 AM   #6
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Quote:
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Safe to run a valved exhaust with a SC installed?
Why wouldn't it be?
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      09-15-2018, 11:22 AM   #7
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Why wouldn't it be?
Because the flow restriction at the X section on one of the valved exhaust and back pressure created with the valves closed make you lose a ton of HP when supercharged.
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      09-15-2018, 12:24 PM   #8
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Originally Posted by JsL View Post
Because the flow restriction at the X section on one of the valved exhaust and back pressure created with the valves closed make you lose a ton of HP when supercharged.
Correct. I ran it on the dyno closed. It made 100 less HP. Hence why I went with this setup if you watch my previous videos talking about how IPE was too restricted.

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Been follow you and your car build on YouTube love it.
Thanks for the support dude! I appreciate it. I take a lot of pride in my content!
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      09-15-2018, 12:35 PM   #9
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Quote:
Originally Posted by JsL View Post
Quote:
Originally Posted by shimmy23 View Post
Why wouldn't it be?
Because the flow restriction at the X section on one of the valved exhaust and back pressure created with the valves closed make you lose a ton of HP when supercharged.
He asked if it was safe... is there a safety concern? I don't see any
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      09-15-2018, 04:04 PM   #10
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The exhaust is awesome! One question, in the X-pipe there are installed resonators or HFC?
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      09-15-2018, 05:02 PM   #11
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Quote:
Originally Posted by shimmy23 View Post
He asked if it was safe... is there a safety concern? I don't see any
There is no issue with the change in back pressure and the lack of safety factor in the supercharger software to deal with it causing rich/lean conditions?
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      10-24-2018, 12:03 AM   #12
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Quote:
Originally Posted by Suspence View Post
Correct. I ran it on the dyno closed. It made 100 less HP. Hence why I went with this setup if you watch my previous videos talking about how IPE was too restricted.
Did you run the Bomiz with open & closed valves on the dyno? Any difference in rwhp?
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      10-24-2018, 01:59 PM   #13
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how does this compare with ipe in loudness?
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      10-25-2018, 11:18 AM   #14
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Quote:
Originally Posted by cvstar9M3 View Post
how does this compare with ipe in loudness?
Just as loud, but deeper.
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      11-02-2018, 02:02 AM   #15
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Car sounds insane! Any examples of this set up on a non-SC m3? Curious to hear what it sounds like on a stock S65.
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