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08-10-2018, 12:23 AM | #1 |
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Experience with Dinan Free Flow Exhaust?
Looking for some insight regarding the dinan free flow exhaust. The exhaust just isn't loud enough for me and I am considering deleting the resonators but would like some feedback. If anyone has done something similar or exact please let me know! Thank You!
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08-10-2018, 12:44 AM | #3 |
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Resonators don’t quiet down the exhaust much, they mainly just smooth out the sound waves (rasp). Either swap mufflers or remove cats (which break up sound waves better than resonators but not as well as a muffler).
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08-10-2018, 05:00 AM | #4 |
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install the Dinan catless midpipe, if you can find one used like I did, along with the Dinan cans and you will be very happy!
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08-10-2018, 08:53 AM | #5 |
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I must be getting old. I find the Dinan cans alone a perfect sound. Loud enough to wake the car up and pronounce itself as a V8. Loud enough to hear with a helmet on at the track. But not to the point where everyone can hear me from the back of their house. Or that it drones and takes over the cabin while driving on the freeway. Also doesn't smell of a catless system.
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08-11-2018, 03:55 AM | #8 |
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Yeah I thought so, but I had a friend do resonator deletes on his ACM modded muffler and it made quite a difference.
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08-11-2018, 03:57 AM | #9 |
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I would love to delete the secondaries but do not want to deal with smog and potential loss of drive train warranty. Hoping to find someone that has deleted resonators on dinan exhaust as that is what I am leaning towards doing the most.
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08-11-2018, 08:22 AM | #10 | |
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Drivetrain warranty? Its unrelated |
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08-13-2018, 12:14 AM | #11 |
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08-14-2018, 05:14 PM | #12 | |
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Yes removing/fiddling with cats is illegal in CA, but that is unrelated to your warranty. Fiddling with any part of your car will jeopardize the warranty for that component or related equipment. Thus, your exhaust is probably no longer warranted, but your headlights are. BMW would have to demonstrate that your removal of the cats caused a drivetrain issue in order to deny a drivetrain warranty claim. |
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08-14-2018, 06:19 PM | #13 |
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when i installed my Dinan exhaust i also felt it was too tame. Once you put on an aftermarket X-pipe, the exhaust is perfect. I chose to run the Evolve X-pipe, which has no primary, high flow secondary, and resonators.
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08-14-2018, 06:25 PM | #14 | |
Stop the hate, get a V8
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If they have a matching X-pipe or whatever, get that. It will be designed to work with the mufflers and provide a nice sound. Simply hacking off resonators or Lego-building an exhaust with different vendors is what leads to those raspy noises everyone complains about. It all gets back to the idea of an exhaust SYSTEM.
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08-14-2018, 06:27 PM | #15 | |
Stop the hate, get a V8
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False. It is illegal to remove functioning emissions control equipment, and BMW certainly will not warranty an aftermarket exhaust, but it has no bearing on the warranty for the rest of the car. I can't believe that this idea still exists some 40+ years after it was clarified in the courts: https://en.wikipedia.org/wiki/Magnus...s_Warranty_Act
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08-14-2018, 07:40 PM | #16 | |
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