Replacing main cats with resonators >

99three · 06-16-2011, 11:42 AM

What are the hp/trq increase -if any advantage at all- replacing the main kittys with resonators?

KyLu II · 06-16-2011, 11:46 AM

Are you talking about the downpipes or secondary cats?

99three · 06-16-2011, 04:18 PM

Secondary cats. Sorry about my ingrish.

rader1 · 06-16-2011, 04:23 PM

Just replacing the secondary cats isn't going to do much, it'll change your sound, but power wise its not gonna change a whole lot. But, there's no real downside to doing it.

///M3THOD · 06-16-2011, 05:00 PM

Quote:

Originally Posted by rader1

Just replacing the secondary cats isn't going to do much, it'll change your sound, but power wise its not gonna change a whole lot. But, there's no real downside to doing it.

A downside would be the smell that seems to drive some people mad. I hardly ever notice, but some folks can't stand it.

I would leave the secondaries in, there's really no benefit to hacking up your stock pipes. If your looking for more sound get some catless midpipes and/or put catless DP's on if your running stockers.

Catless DP's really improve the engine responsiveness and overall performance.

s2k_335i · 06-16-2011, 06:09 PM

I would go with dp first than the midpipe if you are looking for 15 hp.

cn555ic · 06-16-2011, 06:09 PM

Useless mod unless for sound. Power wise you won't feel a thing

99three · 06-16-2011, 06:28 PM

I already have the kittyless DP and the Bastuck exhaust. I was looking for a deeper tone with less rasp @ higher RPM's. Don't get me wrong, it sounds horny up till 5K RPM but after that is gets higher pitched which I want to get rid of. That's why I was thinking of ditching the mid cat and adding the resonators. Thoughts?

cn555ic · 06-16-2011, 06:29 PM

Resonators gets rid of all the annoying rasp you speak of. I have experience with this and they do work

06-16-2011, 11:42 AM	#1
99three Banned 25 Rep 838 Posts Drives: 993, e92, e36, F355, Z32, Jag Join Date: Sep 2010 Location: in the 416 iTrader: (3)	Replacing main cats with resonators > What are the hp/trq increase -if any advantage at all- replacing the main kittys with resonators?
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06-16-2011, 11:46 AM	#2
KyLu II FREE DREAMK 162 Rep 9,321 Posts Drives: the shiiit! Join Date: Aug 2009 Location: Vineland, NJ iTrader: (6) Garage List 2011 Lexus LFA [3.76]	Are you talking about the downpipes or secondary cats? __________________
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06-16-2011, 04:18 PM	#3
99three Banned 25 Rep 838 Posts Drives: 993, e92, e36, F355, Z32, Jag Join Date: Sep 2010 Location: in the 416 iTrader: (3)	Secondary cats. Sorry about my ingrish.
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06-16-2011, 04:23 PM	#4
rader1 Banned 70 Rep 2,197 Posts Drives: Cobb Stage 2+ 135i Join Date: Apr 2011 Location: Roanoke, VA iTrader: (0)	Just replacing the secondary cats isn't going to do much, it'll change your sound, but power wise its not gonna change a whole lot. But, there's no real downside to doing it.
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06-16-2011, 06:09 PM	#6
s2k_335i This is it!! 15 Rep 672 Posts Drives: FBO 335i without meth Join Date: Jul 2010 Location: Land of Freedom iTrader: (1)	I would go with dp first than the midpipe if you are looking for 15 hp. __________________ DFW, TX. Current: 08' Cayenne GTS, 14' Boxster S, 12' CBR 1000', 04' Bayliner 2556 Sold: 2010 A4, 2008 335i, 2007 335i, 2006 M3, 2006 S2000, 1990 NSX, 1991 300zx, 1992 Supra, 1996 Prelude, 1981 CRX, 1980 Mustang.
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06-16-2011, 06:09 PM	#7
cn555ic 441 Rep 18,331 Posts Drives: 335i Join Date: Jun 2007 Location: US iTrader: (6)	Useless mod unless for sound. Power wise you won't feel a thing
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06-16-2011, 06:28 PM	#8
99three Banned 25 Rep 838 Posts Drives: 993, e92, e36, F355, Z32, Jag Join Date: Sep 2010 Location: in the 416 iTrader: (3)	I already have the kittyless DP and the Bastuck exhaust. I was looking for a deeper tone with less rasp @ higher RPM's. Don't get me wrong, it sounds horny up till 5K RPM but after that is gets higher pitched which I want to get rid of. That's why I was thinking of ditching the mid cat and adding the resonators. Thoughts?
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06-16-2011, 06:29 PM	#9
cn555ic 441 Rep 18,331 Posts Drives: 335i Join Date: Jun 2007 Location: US iTrader: (6)	Resonators gets rid of all the annoying rasp you speak of. I have experience with this and they do work
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