Resonator Exhaust question
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As I look at the stock exhaust, I notice the two downflow pipes, two cats, and two pipes into a resonator box, with one outlet. I am purchasing the RD Sport Quad Exhaust. I didn't not want a fake quad, nor did I want a HP loss associated with the cat-back options. Based on what I read, the RDSport Quad will not lose HP and will give me a true quad option. I've listened to the sound clips and think I may prefer a little quieter car. If I inserted a bullet resonator on each pipe, would that quiet it down a little? If so, should the resonator be installed closer to the cats, or downstream closer to the mufflers?
If this turns out to be the option, does anyone have an idea where I can get resonators that fit the RD Sport setup?
Thanks!
If this turns out to be the option, does anyone have an idea where I can get resonators that fit the RD Sport setup?
Thanks!
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My Ride: 2006 550i w/ sport package: bone stock :(
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two other family cars that I dont care to mention, lol!
another question is.... by putting the bullet resonator will that mess with the flow of the exhaust hence losing horsepower!
to my understanding, that would, but that would be a RD sport question, maybe they can run the numbers! no point of spending on a exhaust if its not making power for you.
to my understanding, that would, but that would be a RD sport question, maybe they can run the numbers! no point of spending on a exhaust if its not making power for you.
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Buller... Buller... Buller... Can anyone add anything to this one???
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I removed all resonators with my RD quads. Sounds great, and no droning. I have a 550, so things will differ with yours.
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The RDSport exhaust is actually not that loud but I do understand that's a subjective remark. I knew a couple members on this forum with the RDSport quads on their 545 and didn't think it was that loud. Just nice and deep. Even the complete system on my M5 with headers is not that loud at all compared to other exhausts I've heard on other M5s that don't even have the headers.
As for adding the resonators, unfortunately I don't know the answer to your questions but I think a muffler shop can probably give you an opinion. Or maybe PM RPIpower and ask Eloy about adding resonators to exhausts in general, if you don't get an answer back from RDSport in a timely manner.
As for adding the resonators, unfortunately I don't know the answer to your questions but I think a muffler shop can probably give you an opinion. Or maybe PM RPIpower and ask Eloy about adding resonators to exhausts in general, if you don't get an answer back from RDSport in a timely manner.
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My Ride: 2005 BMW 545i, Silver Grey, Sport Package, R. Shades, Cold Pkg, Sat. Rad., Prem. Sound.
Originally Posted by EuroCarFan' post='777937' date='Jan 26 2009, 05:59 PM
The RDSport exhaust is actually not that loud but I do understand that's a subjective remark. I knew a couple members on this forum with the RDSport quads on their 545 and didn't think it was that loud. Just nice and deep. Even the complete system on my M5 with headers is not that loud at all compared to other exhausts I've heard on other M5s that don't even have the headers.
As for adding the resonators, unfortunately I don't know the answer to your questions but I think a muffler shop can probably give you an opinion. Or maybe PM RPIpower and ask Eloy about adding resonators to exhausts in general, if you don't get an answer back from RDSport in a timely manner.
As for adding the resonators, unfortunately I don't know the answer to your questions but I think a muffler shop can probably give you an opinion. Or maybe PM RPIpower and ask Eloy about adding resonators to exhausts in general, if you don't get an answer back from RDSport in a timely manner.
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VMR Rims V710 19x9.5 ET45 Hyper Silver (rear)
VMR Rims V710 19x8.5 ET35 Hyper Silver (front)
Tires: General Exclaim 275/30/19 (rear)
Tires: General Exclaim 245/35/19 (front)
BMW Tire Pressure Monitor Sensors
BMW M-tech Complete Body Kit w/LCI & no PDC
Hamann Splitter
Vorsteiner Decklid Spoiler BMW M5 E60
BMW Black Grills E60
BMW Shadow Trim
BMW Carbon Fiber Roundells - E60
Angel Eyes (GP Thunder Bulb H8 8500K)
I have purchased the RD Sport exhaust from EuroRev. I haven't received it yet, but it will be shipped with the rest of my new parts.
I just had an interesting conversation with an exhaust "expert" at a local performance shop. He likes the RD Sport exhaust and said that it will sound great, and not too loud as is. He noted that the RD Sport exhaust that I'm purchasing was designed for the v8, and later the retrofit pipes were added as an option to make it work on the twin turbo. He doesn't like the idea of the x-pipe being part of the exhaust on a twin turbo and said it's completely unnecessary. On a turbo, he would rather see two straight thru exhausts... cats, pipe, muffler, & tips.
He asked me what the purpose of the x-pipe for my configuration would be... I don't know... Does anyone have a reason of why this is part of the engineering?
I just had an interesting conversation with an exhaust "expert" at a local performance shop. He likes the RD Sport exhaust and said that it will sound great, and not too loud as is. He noted that the RD Sport exhaust that I'm purchasing was designed for the v8, and later the retrofit pipes were added as an option to make it work on the twin turbo. He doesn't like the idea of the x-pipe being part of the exhaust on a twin turbo and said it's completely unnecessary. On a turbo, he would rather see two straight thru exhausts... cats, pipe, muffler, & tips.
He asked me what the purpose of the x-pipe for my configuration would be... I don't know... Does anyone have a reason of why this is part of the engineering?
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