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Technical Topics B58 6-Cylinder Turbo Engine / Drivetrain / Exhaust Modifications New MAD Product Release - M340,M440 Cat Back Exhaust System

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      03-19-2024, 10:38 PM   #199
pyroxvi
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Quote:
Originally Posted by Eric_M328i View Post
First impression so far sounds amazing
Do you have an aftermarket exhaust brace? I have a Valvetronic Designs exhaust and the exhaust pipes always hits the brace while driving
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      03-19-2024, 10:48 PM   #200
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Quote:
Originally Posted by pyroxvi View Post
Do you have an aftermarket exhaust brace? I have a Valvetronic Designs exhaust and the exhaust pipes always hits the brace while driving
We use the stock brace. It doesn't look like they flatten out the pipe where the brace is which is why it may have a clearance issue. Not 100% sure.
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Last edited by Info@mad-us.com; 03-20-2024 at 09:58 AM..
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      03-20-2024, 01:16 PM   #201
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Originally Posted by pyroxvi View Post
Do you have an aftermarket exhaust brace? I have a Valvetronic Designs exhaust and the exhaust pipes always hits the brace while driving
As mentioned above it just reuses stock brace. No rattle or noticable vibration so far for me.
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      03-22-2024, 07:48 AM   #202
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Quote:
Originally Posted by Eric_M328i View Post
As mentioned above it just reuses stock brace. No rattle or noticable vibration so far for me.
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      03-29-2024, 12:18 PM   #203
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How hard would this be to install with just a pair of jack stands? I've installed axle back systems in the past with stands but never catback.
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      03-29-2024, 02:14 PM   #204
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How hard would this be to install with just a pair of jack stands? I've installed axle back systems in the past with stands but never catback.
I used race ramps cribs under tires to install. Its a heavy car and at least I couldn’t find many spots to securely place jack stands. Just a piece of mind for me. Searching the forum, I didnt see much info on safest places for jack stands
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      03-29-2024, 05:36 PM   #205
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Can confirm... FITMENT and Sound is unreal.
Looks great with all the Turner carbon too!

Video to come!
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      03-29-2024, 06:11 PM   #206
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Quote:
Originally Posted by GOLDPHO3NIX View Post
I used race ramps cribs under tires to install. Its a heavy car and at least I couldn’t find many spots to securely place jack stands. Just a piece of mind for me. Searching the forum, I didnt see much info on safest places for jack stands
Gotcha, may just have a shop do it then. Appreciate it.
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      03-29-2024, 06:16 PM   #207
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stince
Agreed the Carbon is definetly the one to get
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      03-30-2024, 12:50 PM   #208
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Quote:
Originally Posted by stince View Post
Can confirm... FITMENT and Sound is unreal.
Looks great with all the Turner carbon too!

Video to come!
Looks great with that diffuser !
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      03-30-2024, 03:06 PM   #209
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Quote:
Originally Posted by Eric_M328i View Post
stince
Agreed the Carbon is definetly the one to get
Curious, are you able to push the tips further in?
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      03-30-2024, 08:03 PM   #210
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Can check - fitment looks great as it sits
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      03-30-2024, 08:33 PM   #211
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Curious, are you able to push the tips further in?
Each exhaust tip has a sleeve that fits on each of the 4 pipes with a bracket.

Looking at the pics from the shop it looks like there should be some room to push the tips in before it reaches the bend.

I initially wanted to do that at first but I kept mine like this for a few days and I think it looks good.
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      04-06-2024, 09:38 PM   #212
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Does anyone know how to install these valve actuators? My ones are off by about 5 degrees when fully closed…

This exhaust is great but there’s practically zero documentation on installing these Info@mad-us.com
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      04-07-2024, 09:32 PM   #213
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Well i got the exhaust installed, and it sounds perfect. Much better than what i expected.

However a couple of issues…my rear brackets are touching the heat shields therefore causing a rattling noise (see pic). Also, I could not for the life of me get the left midpipe (above the cross brace) to no touch the heat shield. It seems one video on youtube i found also had this issue. Is this normal? I’m getting vibrations when i put the car into gear and i’m thinking this might be the cause. Curious to see if others had this same issue.

Great exhaust however no documentation so it was an absolute PITA to install.
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      04-08-2024, 09:11 AM   #214
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Quote:
Originally Posted by g20exaudinoob View Post
Well i got the exhaust installed, and it sounds perfect. Much better than what i expected.

However a couple of issues…my rear brackets are touching the heat shields therefore causing a rattling noise (see pic). Also, I could not for the life of me get the left midpipe (above the cross brace) to no touch the heat shield. It seems one video on youtube i found also had this issue. Is this normal? I’m getting vibrations when i put the car into gear and i’m thinking this might be the cause. Curious to see if others had this same issue.

Great exhaust however no documentation so it was an absolute PITA to install.

I would be glad to help! Please send us an email info@mad-us.com please include photos of the areas you need help with.
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Last edited by Info@mad-us.com; 04-08-2024 at 09:32 AM..
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      04-15-2024, 04:38 PM   #215
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Info@mad-us.com I'm looking to place an order soon-ish for the black tip version once it's back in stock. I saw some issues with installs in here and was wondering if you have any authorized dealers/installers in the Phoenix AZ area?
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      04-16-2024, 08:56 AM   #216
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Info@mad-us.com I'm looking to place an order soon-ish for the black tip version once it's back in stock. I saw some issues with installs in here and was wondering if you have any authorized dealers/installers in the Phoenix AZ area?

Yes, we have Parts score in Scottsdale. I highly recommend having a shop do this exhaust install.
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      04-16-2024, 02:43 PM   #217
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Quote:
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Yes, we have Parts score in Scottsdale. I highly recommend having a shop do this exhaust install.
Thanks. Gave them a call and they quoted me at nearly $800 for the install. Seems a bit steep for a 2 hour job. Called a couple other bimmer shops and was quoted 1-2 hours at $150/hr.

Any chance you guys have any pictures of a Brooklyn gray with the carbon fiber and/or black tips installed? I'm between those 2 options but I don't have CF anywhere else and not sure how it'll look.
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      04-16-2024, 06:33 PM   #218
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Quote:
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Thanks. Gave them a call and they quoted me at nearly $800 for the install. Seems a bit steep for a 2 hour job. Called a couple other bimmer shops and was quoted 1-2 hours at $150/hr.

Any chance you guys have any pictures of a Brooklyn gray with the carbon fiber and/or black tips installed? I'm between those 2 options but I don't have CF anywhere else and not sure how it'll look.

Ill look for a photo of a brooklyn with those tip options. In the meantime here is a G80 with our carbon tips to give you an idea of the contrast. Black or carbon would go great with that color imo but the black would go better if you have the gloss black package.

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      04-16-2024, 10:01 PM   #219
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Originally Posted by Eric_M328i View Post
Installed, First impression so far sounds amazing.

Sounds clips will come soon
Sound Clip below

M340 MAD Exhaust
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      04-17-2024, 10:22 AM   #220
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