AR catted dp's VS RR catted dp's?

whn · 09-27-2009, 04:25 AM

Hey guys!

As I earlier said somewhere there's possibility that one of my dp cat's are gone.
There's clinkin sound coming on idle right at where cat is located on dp.

I checked from the dealer and they guoted me 723€ each + labour

So I think it's the time to upgrade the dp's.

What you guys think is the better AR catted dp or RR catted dp?

boom · 09-27-2009, 06:18 AM

Do you need an O2 sim with the catted DPs mentioned here?

whn · 09-27-2009, 08:47 AM

ar design · 09-27-2009, 10:59 AM

Quote:

Originally Posted by boom

Do you need an O2 sim with the catted DPs mentioned here?

Not with ours.

scottp999 · 09-27-2009, 11:11 AM

Quote:

Originally Posted by ar design

Not with ours.

Agree. I have had AR's for a few months now. No codes, or lights. AR' dp's were a work of art. The magnaflow high-flow cats they use about double the flow rate over stock,

enrita · 09-27-2009, 01:29 PM

think it depends how much you are boosting. friend of mine got the codes with the AR catted dps and the o2 sims fixed it.

brianGriffin17 · 09-27-2009, 01:38 PM

giac stage 1 and ar catted dp, no codes

rcracer_tx · 09-27-2009, 01:53 PM

Look into CP-E Downpipes, they have great quality parts and the cast bell-mouths really set it apart from the competition

http://www.cp-e.com/2145.html

whn · 09-27-2009, 02:44 PM

Would someone please explain what are those holes for in dp?
Check the pic.

enrita · 09-27-2009, 02:56 PM

those are for the o2 sensors.

whn · 09-27-2009, 03:30 PM

So just put the oe o2 sensors to the holes?

ar design · 09-27-2009, 03:35 PM

That is correct!

boom · 09-27-2009, 05:32 PM

Quote:

Originally Posted by enrita

think it depends how much you are boosting. friend of mine got the codes with the AR catted dps and the o2 sims fixed it.

So even with the cats you still have to have an o2 sim? I'm kind of worried about what the sim is doing. It says that it avoids a "timing pull." how does this happen. What's it doing?

letterkills155 · 09-28-2009, 12:22 AM

i would go with the AR

enrita · 09-28-2009, 12:52 AM

Quote:

Originally Posted by boom

So even with the cats you still have to have an o2 sim? I'm kind of worried about what the sim is doing. It says that it avoids a "timing pull." how does this happen. What's it doing?

yes you will still need the o2 sims. they dont do anything about timing pull... they just make the ECU think the o2 level is fine. thats it. Just get catless with o2 sims. The point of downpipes is the free the exhaust right after the turbos. I know many people that have basically sold or emptied their aftermarket dps cats after very little time since they realized what a mistake it was to buy Catted aftermarket dps.

XPO186 · 09-28-2009, 01:16 AM

Easy answer: AR

whn · 09-28-2009, 01:58 AM

Quote:

Originally Posted by enrita

yes you will still need the o2 sims. they dont do anything about timing pull... they just make the ECU think the o2 level is fine. thats it. Just get catless with o2 sims. The point of downpipes is the free the exhaust right after the turbos. I know many people that have basically sold or emptied their aftermarket dps cats after very little time since they realized what a mistake it was to buy Catted aftermarket dps.

How about the emissions if I change dps to AR catless ones? Im worried about not passing the registration with catless dps because the emissions.

D.yi · 11-12-2009, 01:34 AM

i am wondering the same thing...

deletedelete · 11-12-2009, 01:36 AM

Quote:

Originally Posted by whn

How about the emissions if I change dps to AR catless ones? Im worried about not passing the registration with catless dps because the emissions.

Quote:

Originally Posted by D.yi

i am wondering the same thing...

Yup, thats my concern as well.

Craig@SupremePower · 11-12-2009, 01:36 AM

AR Design FTW!

ar design · 11-12-2009, 10:29 AM

Quote:

Originally Posted by whn

How about the emissions if I change dps to AR catless ones? Im worried about not passing the registration with catless dps because the emissions.

Depends on your state. If you are concerned, go catted.

stressdoc · 11-12-2009, 08:44 PM

Bit of a thread jack, but I would love to hear a no-holds-barred drag out debate about catted vs. smokestack.
Pros and cons. Power. Dealer bitching.

09-27-2009, 04:25 AM	#1
whn Captain 88 Rep 783 Posts Drives: Range Rover Sport Join Date: Aug 2009 Location: Finland iTrader: (3)	AR catted dp's VS RR catted dp's? Hey guys! As I earlier said somewhere there's possibility that one of my dp cat's are gone. There's clinkin sound coming on idle right at where cat is located on dp. I checked from the dealer and they guoted me 723€ each + labour So I think it's the time to upgrade the dp's. What you guys think is the better AR catted dp or RR catted dp?
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09-27-2009, 06:18 AM	#2
boom My X5d tows my spec miata to the track. 74 Rep 1,254 Posts Drives: 2010 X5 35d Join Date: Sep 2009 Location: USA iTrader: (0)	Do you need an O2 sim with the catted DPs mentioned here?
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09-27-2009, 08:47 AM	#3
whn Captain 88 Rep 783 Posts Drives: Range Rover Sport Join Date: Aug 2009 Location: Finland iTrader: (3)
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09-27-2009, 01:29 PM	#6
enrita Major General 161 Rep 7,377 Posts Drives: 335i - Big turbos Join Date: Sep 2008 Location: Italian in Sweden iTrader: (0)	think it depends how much you are boosting. friend of mine got the codes with the AR catted dps and the o2 sims fixed it. __________________ 07 335i AT - MOTIV 750 - MHD E85 BMS flash - BMS PI - JB4G5 - Okada Coils - NGK 5992 Plugs - Helix IC - Snow Stg. 3 - Stett CP - Custom midpipes with 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - LUX H8 - Level 10 AT upgrade
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09-27-2009, 01:38 PM	#7
brianGriffin17 Private 3 Rep 67 Posts Drives: 335 Join Date: Sep 2009 Location: USA iTrader: (0)	giac stage 1 and ar catted dp, no codes
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09-27-2009, 01:53 PM	#8
rcracer_tx Banned 55 Rep 2,013 Posts Drives: BSM 135i Join Date: Apr 2008 Location: Texas iTrader: (0)	Look into CP-E Downpipes, they have great quality parts and the cast bell-mouths really set it apart from the competition http://www.cp-e.com/2145.html
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09-27-2009, 02:44 PM	#9
whn Captain 88 Rep 783 Posts Drives: Range Rover Sport Join Date: Aug 2009 Location: Finland iTrader: (3)	Would someone please explain what are those holes for in dp? Check the pic.
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09-27-2009, 02:56 PM	#10
enrita Major General 161 Rep 7,377 Posts Drives: 335i - Big turbos Join Date: Sep 2008 Location: Italian in Sweden iTrader: (0)	those are for the o2 sensors. __________________ 07 335i AT - MOTIV 750 - MHD E85 BMS flash - BMS PI - JB4G5 - Okada Coils - NGK 5992 Plugs - Helix IC - Snow Stg. 3 - Stett CP - Custom midpipes with 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - LUX H8 - Level 10 AT upgrade
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09-27-2009, 03:30 PM	#11
whn Captain 88 Rep 783 Posts Drives: Range Rover Sport Join Date: Aug 2009 Location: Finland iTrader: (3)	So just put the oe o2 sensors to the holes?
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09-27-2009, 03:35 PM	#12
ar design 296 Rep 4,408 Posts Drives: 04 M3 Join Date: Jan 2008 Location: Denver, CO iTrader: (9)	That is correct! __________________ -Critter
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09-28-2009, 12:22 AM	#14
letterkills155 Second Lieutenant 9 Rep 228 Posts Drives: 08 e92 335i Join Date: Feb 2007 Location: st.louis iTrader: (0) Garage List 08 335i [0.00]	i would go with the AR __________________ 09 e92 335i black/black. Mods: JB3 1.3, Vent Integrated BOOST GAUGE Next Mods: AMS Intercooler, Macht Schnell Catless Downpipes.
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09-28-2009, 01:16 AM	#16
XPO186 Colonel 128 Rep 2,740 Posts Drives: E92 335i Join Date: May 2007 Location: Albany, NY iTrader: (19)	Easy answer: AR __________________
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11-12-2009, 01:34 AM	#18
D.yi Major 52 Rep 1,216 Posts Drives: SB e92 335i Join Date: Oct 2009 Location: SEATTLE iTrader: (0)	i am wondering the same thing...
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11-12-2009, 01:36 AM	#20
Craig@SupremePower G.O.A.T.! 1000 Rep 74,998 Posts Drives: '18 GMC Yukon XL Join Date: Mar 2008 Location: New Jersey iTrader: (14)	AR Design FTW!
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11-12-2009, 08:44 PM	#22
stressdoc Moderator 618 Rep 10,855 Posts Drives: BMW i8; Toy 4runner TRD pro Join Date: Jun 2005 Location: Waco TX iTrader: (0)	Bit of a thread jack, but I would love to hear a no-holds-barred drag out debate about catted vs. smokestack. Pros and cons. Power. Dealer bitching. __________________ My recent ED photos: http://f80.bimmerpost.com/forums/sho....php?t=1026808 my not-so-recent ED: http://www.e90post.com/forums/showthread.php?t=31829 Please join BMWCCA http://bmwcca.org/index.php?pageid=c...&ref_by=300279
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