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E12, E28, E34, E39, E60 General discussion and technical help for all year 5 series cars.

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Old 08-25-2007, 04:37 PM   #1
dinan540
 
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Resonator delete

Well gang,

I am contemplating the resonator delete for my 540.

Here are my choices:

1. Resonator delete and replaced with 3" straigt piping
2. Resonator delete and replaced with super sprint straight pipe. This will cost $200 plus labor.
3. Resonator delete and replaced with a dynomax resonator (bullit muffler), $80 plus labor.
4. Resonator delete and replaced with magnaflow resonator, not sure of the cost.

In my research, I haven't found one system better than the other.

I would like to save weight and increase the sound when accelerating. I do not want a drone at stop lights, slow speeds or resonating at any speed.

Let me know what you guys think. FYI, I have a Remus exhaust currently.
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Old 08-29-2007, 01:23 PM   #2
Dan

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i have magnaflow resonator and exhaust... no drone, just nice deep tone in certain revs. at WOT going by at 130, it sounds like demonic.

i wouldn't spend the money on SS straight pipe; any good shop should be able to bend a 2.75 pipe for you for A LOT LESS.


magnaflows range from $110 to $130 depending on tip. i highly recommend magnaflow as it doesn't drone due to how it's built... no chambers or something like that.
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Old 08-29-2007, 11:25 PM   #3
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I was hoping that you would chime in. I realize where I have read your posts, bimmerforums. Always helpful.

Which resonator from magnaflow would you recommend and where can I buy it? I like the Remus exhaust and will stick to that currently.

In the next few weeks I will be installing the pre-vanos manifold and Dinan stage 5 chip. Should be exciting.

Any idea if someone has removed the existing 540/ M5 headers and had them altered at a header shop? I have an extra set of 540/M5 headers in my garage and am wondering what to do with them.

Paul
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Old 08-29-2007, 11:37 PM   #4
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deleting resonators will add rasp. I would keep the resonator but get magnaflow.
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Old 08-29-2007, 11:50 PM   #5
Dan

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Quote:
Originally Posted by 94bmw325i
deleting resonators will add rasp. I would keep the resonator but get magnaflow.

i replaced my stock resonator with a magnaflow which really is just a pipe with a little padding on the sides.

in a 540, there is no rasp with or w.o resonator.
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Old 08-30-2007, 10:07 AM   #6
Rooz

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Straight pipes will make you ride... hummm.... Really loud...
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Old 08-30-2007, 10:40 AM   #7
Dan

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if you're wondering what part # the magnaflow resonator is:
14415

in the FAQ, there's Mike Toro you can contact and tell him Dan sent ya. he'll set you up with a good price. i bought exhausts for others near me and the resonator all at once like a mini-group buy.

oh, magnaflow exhaust only weighs 14 lbs. half of the stock exhaust weighs that much!
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Old 08-30-2007, 03:54 PM   #8
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Quote:
Originally Posted by Dan
i replaced my stock resonator with a magnaflow which really is just a pipe with a little padding on the sides.

in a 540, there is no rasp with or w.o resonator.
lucky
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