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Old 2nd June 2006, 01:11   #1
PhillyE60M5
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Cats & Resonator Remove?

I just have my resonator removed yesterday and thinking about removing my cats as well. Do anyone have a video or sound file on how loud it is with the stock ehaust? or any thoughts on this procedure? I'm going with custom straight pipes..
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Old 2nd June 2006, 02:00   #2
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There have been a number of studies over the years by various car mags that have suggested that removing cats on modern cars will do little or nothing to enhance performance.
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Old 2nd June 2006, 03:42   #3
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cats are "built into " the headers....to remove them, you need new headers.

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Old 2nd June 2006, 04:48   #4
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Quote:
Originally Posted by Realtycar
cats are "built into " the headers....to remove them, you need new headers.
There are two sets (four total) of cats on the car. You cna remove the secondary ones.

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Old 2nd June 2006, 05:12   #5
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I'm not looking for performance per se...but more of a noise factor. I want a FART CANNON!!!
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Old 2nd June 2006, 06:27   #6
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Just remove the mufflers then. You'll get way more noise.
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Old 2nd June 2006, 06:54   #7
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Or if your truely feeling advertous remove the headers and then you will at least have a cannon.
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Old 2nd June 2006, 17:11   #8
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Look for Georges sound clips with the eisenmann section 1+2 replacement pipes and the Eisenmann Meist. SUS exhaust.

Thats pretty loud.
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Old 4th June 2006, 06:49   #9
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I just had my Cats removed in addition to my resonator, and I must say it's definately a sweet sound. Pretty close to the Eisenmann Race Exhaust, just a tad bit softer. Going through the Holland Tunnel was simply amazing. What do you guys think of removing the muffler and make it a complete Straight Pipe?
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Old 4th June 2006, 15:38   #10
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I don't think it will be all that loud straightpiped honestly. At lest not audibly satisfying. I have run the E60 without any mufflers and it sounded quite dreadful. I think the exhausts help baffle that sound into a good tone and allowit to pierce ears at certain decibals whereas a straightpipe setup just blasts out all sorts of odd tones. Hope this helps.
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