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BMW 3-Series (E90 E92) Forum
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what's the difference between resonated and Non-resonated?
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04-26-2007, 03:04 PM | #1 |
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what's the difference between resonated and Non-resonated?
I am confuse with them
anybody can give me adefineation?
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04-26-2007, 03:21 PM | #2 |
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a resonator is sort of like a mini-muffler and its between the cat converter and the muffler, it sort of a silencer to make the exhaust note less loud
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04-26-2007, 03:51 PM | #3 |
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Non resonated just means either the exhaust has no resonators or that they removed the resonators. Just remove resonators and weld in straight pipes.
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04-26-2007, 04:22 PM | #4 |
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thanks a lot!!
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04-30-2007, 06:01 PM | #6 |
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Does it make a big difference sound wise or power wise? If were talking about sound, it really depends on the car. Some people see a huge improvement on the tone of their car. But this doesn't seem to be the case with the e9x. Search for soundclips, i know theirs a few floating around somewhere with stock exhaust resonator removed. IMO most people wont even be able to tell a difference. Power wise, you wont be seeing gains from it, although your butt dyno might make you think their is. Its pretty much for sound (or lack of)
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04-30-2007, 08:37 PM | #7 |
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Question. So if I'm going with a full custom exhaust system, I shouldn't even add the resonator, right? It would make sense not to especially if it has no gains other than sound. I'm not sure how much weight I'll save but I would hope I can at least shed a few pounds.
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04-30-2007, 08:54 PM | #8 |
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I forgot to ask...I know many aftermarket companies are still designing exhaust systems, but are there any aftermarket exhaust brand names you can recommend that I should look out for? Thanks.
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2008 335i Sedan: Met blk, Blk Lthr w/ pop wood, Sp pkg, Pr Pkg, Cold Pkg, Navi, Sat Radio, Carb Fiber Fr Lo lips and roudrels, Tints (20%), Clear Bra (360 degrees-incl doors), Blackline Tails, red calipers. 18x8.5 & 9.5 Ruff Racing Staggered wheels (saved 6-7 lbs/wheel, CP-E Custom Exhaust system, SS-Turbo Tuner, KN&N, CDV.
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04-30-2007, 09:06 PM | #9 | |
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Quote:
Tons of them are. A quick search will get you more names you can count on your two hands. You might even have to enlist your feet! |
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04-30-2007, 09:35 PM | #10 | |
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Quote:
If your going custom then there is no need for resonators. |
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05-01-2007, 12:38 PM | #11 |
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The resonator on the 335 e90 is non-baffled and acts as an x-pipe. I installed a cat back system that eliminated the second cats, resonator, and had flow-thru mufflers. I found the exhaust note on this car is naturally low, and it can create a situation where the low frequencies transmit to the cabin and get amplified at certain RPM levels.
I’m not sure what part the resonators play in reducing/eliminating frequencies or muffling sound. I do believe that type (baffled or straight thru), length, and diameter can be used to eliminate specific frequencies. I think the mufflers and cats play a larger role in quieting sound then the resonators. Even though a lot of people here are doing it, I’d be careful about removing a resonator to increase exhaust sound. You may get a little more sound and a lot more vibrations, plus, they don’t restrict the flow nearly as much as the stock mufflers, cats, and poorly bent piping. |
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