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BMW 5-Series (G30) Forum Engine, Exhaust, Drivetrain, Tuning Modifications Exhaust modification possibilities for G30 M550

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      02-06-2018, 02:32 PM   #23
yxc145
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Quote:
Originally Posted by btownsoccer22 View Post
Iím not an engineer by any means, but on a turbo car less back pressure = better.
Good to know. well, i really can't tell since I haven't driven the car hard (only got 700 miles on it). Can't wait to wake up this beast..
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      02-16-2018, 12:59 AM   #24
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Anyone wanna post more videos on the sound difference? How is Bmw on cutting out the resonator if you're on a lease?
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      02-16-2018, 10:08 AM   #25
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Originally Posted by EpicSurge View Post
Anyone wanna post more videos on the sound difference? How is Bmw on cutting out the resonator if you're on a lease?
I would be prepared to pay to get it welded back into the system at the end of the lease. It should be a similar cost.
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      09-14-2018, 01:36 AM   #26
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What was the cost for the resonator delete? Anyone have any thoughts on whether this will impact warranty on the car?
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      08-30-2019, 10:07 PM   #27
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Quote:
Originally Posted by SMED View Post
.

Here is quick video of my M550xi with both resonators taken out in Sport Plus accelerating.



And a cold start video in comfort and sport plus.

It still sounds quite driving around normally in comfort mode. Then its sounds amazing when you hit the loud pedal in Sport mode. Best of both worlds in my opinion. It should have sounded like this from the factory.

Do you have pictures of what you cut off? The resonators?
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      08-31-2019, 02:22 PM   #28
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Quote:
Originally Posted by yellowssm View Post
Quote:
Originally Posted by SMED View Post
.

Here is quick video of my M550xi with both resonators taken out in Sport Plus accelerating.



And a cold start video in comfort and sport plus.

It still sounds quite driving around normally in comfort mode. Then its sounds amazing when you hit the loud pedal in Sport mode. Best of both worlds in my opinion. It should have sounded like this from the factory.

Do you have pictures of what you cut off? The resonators?
No, I don't have any pictures. I cut them right before the first one and right after the second. Then the exhaust shop just put in two straight pieces to fill the gap. Sounds amazing and very cheap to do.
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      09-06-2019, 10:15 AM   #29
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what if you are leasing the car? or if you go in for service?
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      09-06-2019, 01:44 PM   #30
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Quote:
Originally Posted by Roki_014 View Post
what if you are leasing the car? or if you go in for service?
I've done the same resonator delete.

Service does not care if it's leased or not, and the resonators have nothing to do with the engine. The only warranty it can possibly affect is the exhaust warranty, but not concerned.

Once lease is up will weld the resonators back in and turn in the car.
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      09-06-2019, 01:54 PM   #31
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Quote:
Originally Posted by modthispny View Post
I've done the same resonator delete.

Service does not care if it's leased or not, and the resonators have nothing to do with the engine. The only warranty it can possibly affect is the exhaust warranty, but not concerned.

Once lease is up will weld the resonators back in and turn in the car.
Do you have pic of what you cut out?
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      09-29-2019, 09:44 AM   #32
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Quote:
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Quote:
Originally Posted by bmwgcyr View Post
I found a shop in Montreal that would do the suggested mod for my muffler in a few weeks from now. I will let you know when it's done with pictures and sound clips.
I also forgot to say that this mod would cost only $300.
Which shop in Montreal is that? Thanks
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      09-29-2019, 04:13 PM   #33
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For you guys who did it,
Did they have to bend the pipes under the bracket where the resonators are? Shop that quoted me $530 said they'd have to drop entire system, bend their pipes and weld them. Just curious
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      09-29-2019, 08:49 PM   #34
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Quote:
Originally Posted by AddyDaddy View Post
For you guys who did it,
Did they have to bend the pipes under the bracket where the resonators are? Shop that quoted me $530 said they'd have to drop entire system, bend their pipes and weld them. Just curious

I paid $230 in Nor Cal. It took about an hour, very simple and straight forward. No need to drop entire system. I would try a different shop.
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