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5-Series (E12,E28, E34, E39, E60) Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)

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Old 09-17-2012, 12:07 AM   #1 (permalink)
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e34 exhaust

I am new to this forum. I own a 92 525i with reasonably low miles for its age. It runs extremely well, handles well, and mechanically is in excellent condition. But, I have one question that I am hoping to get some help with. About 40,000 miles ago, a new, OEM replacement exhaust was installed. But, from the day I purchased it, it has created an extremely loud droning sound, basically as soon as I touch the pedal. I have taken it to a German car specialist for all the service, and they have told me that there is nothing visibly wrong with the exhaust, which leads me to think that its bad on the inside. I have ordered a new muffler and resonator from Supersprint. So, I am wondering if anyone has ever had a similar issue. I am nervous that replacing the muffler and resonator won't fix the problem, although I'm not sure if thats reasonable to think. Its the first car I have owned that I would like to work on myself, and so I am still learning. Any insights anyone can give me would be greatly appreciated.
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Old 09-17-2012, 01:14 AM   #2 (permalink)
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Are you sure this was a genuine OEM exhaust? Or an "OEM replacement"? The term OEM replacement is commonly used to describe a product that is not actually genuine, but replaces the original part. Its a way to make a less expensive part sound like a genuine one. They most likely did not install a genuine BMW exhaust. Supersprint exahusts are very well made and sound quite nice. Their are numerous sound clips of them on YouTube.
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Old 09-17-2012, 10:50 AM   #3 (permalink)
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yeah I'm very sure it is. I have all the receipts for the car, and it was ordered and installed by the BMW dealer the car was purchased from.
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Old 09-17-2012, 05:53 PM   #4 (permalink)
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See if the receipt lists a part number. You can cross reference the part number of the exhaust here Welcome, BMW fans! to make sure it was legit.
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Old 09-17-2012, 06:53 PM   #5 (permalink)
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yes, it is most definitely a legitimate exhaust. my concern is not why my 14 year old exhaust with 40,000 miles is loud. It IS loud, and I need to do something about it. My question is whether or not replacing just the exhaust would take care of the problem, or if there could be some other issue causing it to be loud.
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Old 09-21-2012, 09:08 PM   #6 (permalink)
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A stock exhaust is fairly quiet except under full throttle. If it sounds like the kid next door with his ricer honda, then yes their is a problem. My recomendation would be going back to the dealership and having a service tech go for a ride with you.
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Old 09-22-2012, 12:48 AM   #7 (permalink)
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Well, I have had a few different people look at it. Each of them have said theres nothing visibly wrong, that it has to be something inside. Regardless, my new exhaust will be here in 5 weeks or so, hoping it takes care of the issue.
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