Thinking of just gutting my catted DPs... am I insane?

rhodesman · 06-16-2016, 05:31 PM

I have the AR Design down pipes with racing cats and I'm considering hammering out the internals to make it more or less, a cat-less DP system. Yes yes, I know I could just buy a cheap set of catless DPs, but gutting the DPs would be 100% free to me (I would do it myself).

Am I insane to even consider this? What would be the downfalls, having two mini-resonators behind the turbos? Would this significantly increase the sound/drone of my berk exhaust?

I'm on the fence if it's even worth the time doing it, but curious what others might think.

ShocknAwe · 06-16-2016, 11:34 PM

Sell them and buy meowless if you want. No idea why you'ld bust up something so expensive. Downside? Increase turbulence that close to the turbo you could lose power. Same reason not to gut stock dps.

totti84 · 06-17-2016, 12:23 AM

+1 to insanity

Cavpilot2k · 06-17-2016, 09:31 AM

I was thinking turbulence too. Unless you ground and polished the sides to ensure they are completely smooth where the cat was attached, you risk disturbing the air flow.
I wouldn't do it.

ShocknAwe · 06-17-2016, 09:56 AM

Quote:

Originally Posted by Cavpilot2k

I was thinking turbulence too. Unless you ground and polished the sides to ensure they are completely smooth where the cat was attached, you risk disturbing the air flow.
I wouldn't do it.

Be better to cut them out and weld in straight pipe.

2PUTT · 06-17-2016, 11:05 AM

in addition to what everyone has mentioned, it will not be good for your health.

Elsabor67 · 06-17-2016, 11:07 AM

Are you looking to trade for catless AR Design downpipes??

rhodesman · 06-19-2016, 02:54 PM

I'm willing to sell my DPs to someone. Looking to just get the BMS catless DPs and would be happy to sell my DPs for the same price as the BMS DPs ($359.00 + shipping).

rhodesman · 06-21-2016, 08:49 AM

Quote:

Originally Posted by rhodesman

I'm willing to sell my DPs to someone. Looking to just get the BMS catless DPs and would be happy to sell my DPs for the same price as the BMS DPs ($359.00 + shipping).

To anyone who might see this, my AR catted DPs are already sold. Talk about an idea/change going from 0-200 in a split second, LOL!

rod.bearings · 06-22-2016, 11:30 AM

Quote:

Originally Posted by rhodesman

To anyone who might see this, my AR catted DPs are already sold. Talk about an idea/change going from 0-200 in a split second, LOL!

Lol that was a good price for catted DP. Niche market but they charge up the ass for those. I have AR Design resonated and ceramic coated dps and I love them.

Dat1seriesdoe · 07-07-2016, 08:28 AM

to anyone seeing this and wanting to possibly trade dps - i have ar catted dps and am interested in getting a set of catless - hit me up and let me know what you got.. i would like to stay with ar design if possible.

sorry for the thread jack !

rhodesman · 07-07-2016, 02:19 PM

Quote:

Originally Posted by Dat1seriesdoe

to anyone seeing this and wanting to possibly trade dps - i have ar catted dps and am interested in getting a set of catless - hit me up and let me know what you got.. i would like to stay with ar design if possible.

sorry for the thread jack !

LOL! you're in Baltimore!? City or Burbs? (I'm up in Towson)

Jeff@TopGearSolutions · 07-07-2016, 04:11 PM

I was going to say, definitely sell them and just get catless. Would be sin to punch those out.

06-16-2016, 05:31 PM	#1
rhodesman First Lieutenant 113 Rep 367 Posts Drives: E88 135i Join Date: Dec 2009 Location: Maryland iTrader: (2) Garage List 2010 BMW 135i [10.00]	Thinking of just gutting my catted DPs... am I insane? I have the AR Design down pipes with racing cats and I'm considering hammering out the internals to make it more or less, a cat-less DP system. Yes yes, I know I could just buy a cheap set of catless DPs, but gutting the DPs would be 100% free to me (I would do it myself). Am I insane to even consider this? What would be the downfalls, having two mini-resonators behind the turbos? Would this significantly increase the sound/drone of my berk exhaust? I'm on the fence if it's even worth the time doing it, but curious what others might think. __________________ '10 N54 135i Cabrio \|\| ///M-Sport \|\| SCHWARZ/BEIGE *Mods:* JB4, Trebila Custom tune, FBO, Fuel-It Stg2 LPFP, Berk Street Performance w/ Berk Resonated Midpipes, & lots of little body/OEM+ mods
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06-16-2016, 11:34 PM	#2
ShocknAwe 1Addict 3233 Rep 7,894 Posts Drives: E82 Mutt, M57 Truck Join Date: Jul 2012 Location: Charleston iTrader: (22)	Sell them and buy meowless if you want. No idea why you'ld bust up something so expensive. Downside? Increase turbulence that close to the turbo you could lose power. Same reason not to gut stock dps. __________________ 2010 135i 6MT Jet Black N54/3 FE82 Mutt \| BUILD THREAD \| GARAGE SALE
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06-17-2016, 12:23 AM	#3
totti84 Major 112 Rep 1,140 Posts Drives: N54 135i 6MT Join Date: Aug 2014 Location: Sydney, Australia iTrader: (5) Garage List 2009 BMW 135i M Sport [0.00]	+1 to insanity
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06-17-2016, 09:31 AM	#4
Cavpilot2k Chief Warrant Officer 1025 Rep 1,638 Posts Drives: like a damn lunatic Join Date: Feb 2012 Location: Boston iTrader: (0)	I was thinking turbulence too. Unless you ground and polished the sides to ensure they are completely smooth where the cat was attached, you risk disturbing the air flow. I wouldn't do it. __________________ "Prius" is Latin for Eunuch. "Hrothgar": 2012 135i: 6MT M-Sport, BSM/Blk; Nav, Premium, Convenience, HK Dinan Stage 2 +PPK /// BMW PE /// VRSF CP /// K&N /// Koni Sports /// RSFB Inserts /// MPS4S 225/255 /// Other Stuff
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06-17-2016, 11:05 AM	#6
2PUTT Captain 513 Rep 943 Posts Drives: F87 Join Date: Nov 2014 Location: Ubiquitous iTrader: (5)	in addition to what everyone has mentioned, it will not be good for your health.
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06-17-2016, 11:07 AM	#7
Elsabor67 aiming for 450..... 303 Rep 2,910 Posts Drives: Totaled :-( Join Date: Feb 2009 Location: Louisiana iTrader: (28) Garage List 2009 135i [10.00]	Are you looking to trade for catless AR Design downpipes?? __________________ Quote from Ezeedee regarding car mods: "you're only done when you sell the car "
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06-19-2016, 02:54 PM	#8
rhodesman First Lieutenant 113 Rep 367 Posts Drives: E88 135i Join Date: Dec 2009 Location: Maryland iTrader: (2) Garage List 2010 BMW 135i [10.00]	I'm willing to sell my DPs to someone. Looking to just get the BMS catless DPs and would be happy to sell my DPs for the same price as the BMS DPs ($359.00 + shipping). __________________ '10 N54 135i Cabrio \|\| ///M-Sport \|\| SCHWARZ/BEIGE *Mods:* JB4, Trebila Custom tune, FBO, Fuel-It Stg2 LPFP, Berk Street Performance w/ Berk Resonated Midpipes, & lots of little body/OEM+ mods
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07-07-2016, 08:28 AM	#11
Dat1seriesdoe Private First Class 14 Rep 107 Posts Drives: 10' 135i AW fbo mhd2+ - rip Join Date: Jan 2015 Location: Baltimore, MD iTrader: (0) Garage List 2010 BMW 135i [0.00]	to anyone seeing this and wanting to possibly trade dps - i have ar catted dps and am interested in getting a set of catless - hit me up and let me know what you got.. i would like to stay with ar design if possible. sorry for the thread jack !
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07-07-2016, 04:11 PM	#13
Jeff@TopGearSolutions 3441 Rep 79,211 Posts Drives: C6 Z06, 09 335i, 10 335xi Join Date: Dec 2008 Location: www.TopGearSolutions.com iTrader: (37)	I was going to say, definitely sell them and just get catless. Would be sin to punch those out.
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