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      03-02-2009, 09:56 PM   #1
knext21
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Question about Cat Delete and Resonators

I was thinking about going by the muffler shop tomorrow and deleting the secondary Cat. and wanted to find out a coupe things. Will I get any codes or anything by doing the delete? Second, you guys think it will make the exhaust drone more?
Also, will removing the resonators make the sound more raspy? Don't know if I should delete the Cat and Res or just the Cat.

Thanks in advance
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      03-02-2009, 10:04 PM   #2
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Deleting the resonators will make the exhaust more raspy for sure.... you have the magnaflows right? I heard if you delete the resonators and cats with the magnaflows it will drone alot. You dont need any software etc. to delete the secondary cats i believe.
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      03-02-2009, 10:09 PM   #3
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A related question. I would LOVE to know if you will pass California emmissions - the pollutants numbers (not the visual, obvisously) with a secondary cat delete. Maybe Turner can answer this. Maybe no one cares but me...
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      03-02-2009, 10:12 PM   #4
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Quote:
Originally Posted by camaross305 View Post
Deleting the resonators will make the exhaust more raspy for sure.... you have the magnaflows right? I heard if you delete the resonators and cats with the magnaflows it will drone alot. You dont need any software etc. to delete the secondary cats i believe.
Yea I have the magnaflows... the drone really doesn't bother me much but I don't want it to increase that much from how it is now. I'm pretty convinced in not deleting the Res but I still think I want to do the Cat delete. Looking for a louder but deeper sound which I was told I can do by deleting the secondary cat.

Anybody out there already delete their secondary cat?
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      03-02-2009, 11:03 PM   #5
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Quote:
Originally Posted by knext21 View Post
I was thinking about going by the muffler shop tomorrow and deleting the secondary Cat. and wanted to find out a coupe things. Will I get any codes or anything by doing the delete? Second, you guys think it will make the exhaust drone more?
Also, will removing the resonators make the sound more raspy? Don't know if I should delete the Cat and Res or just the Cat.

Thanks in advance
It looks like the sensor is right after the primary cats, so getting rid of the secondary cats should not factor in.
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      03-02-2009, 11:41 PM   #6
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Quote:
Originally Posted by knext21 View Post
I was thinking about going by the muffler shop tomorrow and deleting the secondary Cat. and wanted to find out a coupe things. Will I get any codes or anything by doing the delete? Second, you guys think it will make the exhaust drone more?
Also, will removing the resonators make the sound more raspy? Don't know if I should delete the Cat and Res or just the Cat.

Thanks in advance
DO IT!!! and post vids when your done
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      03-03-2009, 11:01 AM   #7
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I deleted the second cats and resonators and have the eisenmann race, the no codes whatsoever, just a nice loud rumble
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      03-03-2009, 01:09 PM   #8
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Quote:
Originally Posted by ChinoOrtega View Post
I deleted the second cats and resonators and have the eisenmann race, the no codes whatsoever, just a nice loud rumble
We had this same setup on our E92 M3. Very aggressive.

[u2b]bxAQLnSra1Y&feature=channel_page[/u2b]
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      03-03-2009, 05:13 PM   #9
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did you do it?
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      03-03-2009, 11:37 PM   #10
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Nope not yet, still trying to do a bit more research about the drone.
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      03-04-2009, 03:07 PM   #11
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I think youll be fine with drone if you delete the 2nd cats...just dont delete the resonators
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      03-04-2009, 06:49 PM   #12
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Will deleting only the secondary cats create more drone? Will it make it more raspy?

TIA!
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