Vishnu Catted DP vs AR Catted DP

RedmangoHTX · 05-23-2012, 03:32 AM

Hey all,

I'm new to the forum, so hopefully you guys will see more of me around soon. I currently have the BMS downpipe, but that darn catless smell annoys my whole family lol. I'm looking into maybe purchasing one of those catted options. Anyone have either one and care to give their input on what they think of it?

Thanks!

BMW_Belgier · 05-23-2012, 04:30 AM

Hello and welcome

Maybe you want to use the

button before you post something...

However, your question is interesting and hope you will have a lot of answers

eyim1988 · 05-23-2012, 09:28 AM

Might as well stay with the stock dp

steelersfan · 05-23-2012, 10:19 AM

Don't mean to jack redman's thread, but is there "absolutely no" value in installing a "catted" aftermarket DP, vice staying stock?

BMW_Belgier · 05-23-2012, 10:23 AM

Quote:

Originally Posted by steelersfan

Don't mean to jack redman's thread, but is there "absolutely no" value in installing a "catted" aftermarket DP, vice staying stock?

Ofcourse! But the gain of HP will be a lot less! So the balance price/work to performance is a bit off...

Mike@N54Tuning.com · 05-23-2012, 10:33 AM

Gains from catted are about half the gains from cat less. The ar design DPs use high flow cats so there is still a big advantage getting them over stock, but of course not as much as if going cat less.

Mike

steelersfan · 05-23-2012, 12:59 PM

Quote:

Originally Posted by BMW_Belgier

Ofcourse! But the gain of HP will be a lot less! So the balance price/work to performance is a bit off...

Quote:

Originally Posted by Mike@N54Tuning.com

Gains from catted are about half the gains from cat less. The ar design DPs use high flow cats so there is still a big advantage getting them over stock, but of course not as much as if going cat less.

Mike

Understood, and thanks for the response(s).

CPWINCH · 05-23-2012, 01:07 PM

just throw some cats on your mid pipes!

BMW_Belgier · 05-23-2012, 02:20 PM

The X-Drive models have catted midpipes if you want OEM

RedmangoHTX · 05-23-2012, 03:43 PM

I'm not too concerned with losing a couple HP. I however love the sound that the catless Dp has unleashed. I feel like as long as my car is relatively quick (able to run map 2), the comfort level (smell) is high, and the sound upgrade is still there all will
Be good.

RedmangoHTX · 05-23-2012, 03:48 PM

I guess another way to put it is... How much will going with a catted Dp plus map 2 yield (Hp wise) me versus going to stock Dp and running map 1?

eyim1988 · 05-23-2012, 05:13 PM

Quote:

Originally Posted by RedmangoHTX

I guess another way to put it is... How much will going with a catted Dp plus map 2 yield (Hp wise) me versus going to stock Dp and running map 1?

umm you can still go map 2 with the stock dp. You just need the right octane to be able to support it.!

BMW_Belgier · 05-23-2012, 07:17 PM

I would go for the catted midpipes and cattless dp...

Its a shame that i can't drive here with cattless dp...

SRT14PimPin07 · 05-23-2012, 07:53 PM

Everyone on this forum is so one minded. The guy gets it Catless is better than Catted obviously. But he cares more about the stinky smell than the HP he's getting out of the Catless DP.

I would honestly like to go down this route as well because I wouldn't want my 50K BMW to smell like shit either. But at the same time, I'd like a high flow DP so I can run MAP 2 without using NOS octane booster, which I heard makes your engine yellow.

Is there anyone running a catted DP that can provide us with some info?

torqnDC · 05-23-2012, 08:43 PM

What specific info are you looking for? Don't have any before/after dyno numbers (just after) but can provide some insight from the daily driver perspective.

The catted AR downpipe plus JB4 map 2 sounds great, performs well, and doesn't give the smell nearly as badly as the catless variant. If you're in a garage with the windows down and stopped you might smell a little bit, or the car behind you might smell a bit when you're running rich... but again as long as you're not looking for the full power and just want the sound, smell and ability to run map2 it's definitely worth it. Running AR catted + vanguard exhaust the car sounds like a beast.

fasteddie222 · 05-23-2012, 09:52 PM

I just bought iCarbon catted dps but i havent installed them yet... I really dont wat my car to smell like crap also my friend has catless and his car is always dirty in the back... Is there really such a big difference in HP gain between catted and catless?

RedmangoHTX · 05-24-2012, 02:04 AM

Quote:

Originally Posted by torqnDC

What specific info are you looking for? Don't have any before/after dyno numbers (just after) but can provide some insight from the daily driver perspective.

The catted AR downpipe plus JB4 map 2 sounds great, performs well, and doesn't give the smell nearly as badly as the catless variant. If you're in a garage with the windows down and stopped you might smell a little bit, or the car behind you might smell a bit when you're running rich... but again as long as you're not looking for the full power and just want the sound, smell and ability to run map2 it's definitely worth it. Running AR catted + vanguard exhaust the car sounds like a beast.

Thanks. That's pretty much what I was looking for. What were your dyno numbers? So smell-wise, windows down @ a stoplight.. would you smell it? That's like the biggest thing for me lol. I don't know how it doesn't bother lots of you guys. Everyone seems to notice mine.

torqnDC · 05-24-2012, 07:02 AM

No, ordinarily with the windows down at a stoplight you won't smell it. If there's a strong wind from the rear of the car you might smell a bit, but even so it's not very noticeable. It's the car behind you when you get on the gas in the low RPM range that will smell a bit, haha.

305HP/355Ft-lbs on a DynoDynamics, which I'm told would read equivalent to 345HP/403Ft-lbs on a DynoJet.

Marc R · 05-24-2012, 07:26 AM

Catted mid pipes would be my choice...(good info again!)

BMW_Belgier · 05-24-2012, 08:21 AM

Yes catted midpipes

I would however organize steel cats (dont know how to call them in english) so you dont burn them out without pre-catted dps

fasteddie222 · 05-24-2012, 08:45 AM

Quote:

Originally Posted by torqnDC

No, ordinarily with the windows down at a stoplight you won't smell it. If there's a strong wind from the rear of the car you might smell a bit, but even so it's not very noticeable. It's the car behind you when you get on the gas in the low RPM range that will smell a bit, haha.

305HP/355Ft-lbs on a DynoDynamics, which I'm told would read equivalent to 345HP/403Ft-lbs on a DynoJet.

That's good. So it's like farting on their face... Awesome lol

BMW Junge für Leben · 05-25-2012, 07:37 PM

i have an AR catless dp, definitely recommend it. Even though your going catted, i'd say AR!

05-23-2012, 03:32 AM	#1
RedmangoHTX Enlisted Member 2 Rep 33 Posts Drives: 2011 335i Sedan 6MT Join Date: May 2012 Location: Texas iTrader: (1)	Vishnu Catted DP vs AR Catted DP Hey all, I'm new to the forum, so hopefully you guys will see more of me around soon. I currently have the BMS downpipe, but that darn catless smell annoys my whole family lol. I'm looking into maybe purchasing one of those catted options. Anyone have either one and care to give their input on what they think of it? Thanks!
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05-23-2012, 04:30 AM	#2
BMW_Belgier Lieutenant Colonel 99 Rep 1,597 Posts Drives: E92 335xi n55 Join Date: May 2012 Location: Switzerland iTrader: (0)	Hello and welcome Maybe you want to use the button before you post something... However, your question is interesting and hope you will have a lot of answers
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05-23-2012, 09:28 AM	#3
eyim1988 Lieutenant Colonel 98 Rep 1,647 Posts Drives: 2022 BMW M4 Join Date: Feb 2011 Location: Los Angeles, CA iTrader: (5) Garage List 2022 M4 [0.00]	Might as well stay with the stock dp __________________ Current: 2021 X3MC Past: 2013 bmw 335i, 2011 bmw 335i coupe, 2016 bmw m3
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05-23-2012, 10:19 AM	#4
steelersfan First Lieutenant 12 Rep 331 Posts Drives: 11 335i E90 M-Sport Join Date: Nov 2011 Location: Virginia Beach, VA iTrader: (2) Garage List 2011 BMW 335i [0.00]	Don't mean to jack redman's thread, but is there "absolutely no" value in installing a "catted" aftermarket DP, vice staying stock? __________________ 2011 335i Sedan \| Le Mans Blue \| ///M Sport \| Performance Edition \| WeissLicht AE's \| AG 19" M355's \|
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05-23-2012, 10:33 AM	#6
Mike@N54Tuning.com Joint Chiefs of Staff 4907 Rep 115,980 Posts Drives: 2007 335i, 2015 M3 Join Date: Dec 2008 Location: N54tuning.com iTrader: (89)	Gains from catted are about half the gains from cat less. The ar design DPs use high flow cats so there is still a big advantage getting them over stock, but of course not as much as if going cat less. Mike
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05-23-2012, 01:07 PM	#8
CPWINCH Brigadier General 732 Rep 4,635 Posts Drives: Toyota Prius Join Date: May 2010 Location: Los Angeles iTrader: (7)	just throw some cats on your mid pipes! __________________ Follow my BMW instagram @CARMODIFICATION Let me know you are from bimmerpost and i'll follow back
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05-23-2012, 02:20 PM	#9
BMW_Belgier Lieutenant Colonel 99 Rep 1,597 Posts Drives: E92 335xi n55 Join Date: May 2012 Location: Switzerland iTrader: (0)	The X-Drive models have catted midpipes if you want OEM
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05-23-2012, 03:43 PM	#10
RedmangoHTX Enlisted Member 2 Rep 33 Posts Drives: 2011 335i Sedan 6MT Join Date: May 2012 Location: Texas iTrader: (1)	I'm not too concerned with losing a couple HP. I however love the sound that the catless Dp has unleashed. I feel like as long as my car is relatively quick (able to run map 2), the comfort level (smell) is high, and the sound upgrade is still there all will Be good. __________________ SOLD: 2011 E90 335i: Alpine White, 6MT, 30% Tint, V1 Hardwire, Performance Grilles, LUX H8, M-Sport Rear Bumper, JB4 Stage 2, BMS Downpipe, BMS Intake.
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05-23-2012, 03:48 PM	#11
RedmangoHTX Enlisted Member 2 Rep 33 Posts Drives: 2011 335i Sedan 6MT Join Date: May 2012 Location: Texas iTrader: (1)	I guess another way to put it is... How much will going with a catted Dp plus map 2 yield (Hp wise) me versus going to stock Dp and running map 1? __________________ SOLD: 2011 E90 335i: Alpine White, 6MT, 30% Tint, V1 Hardwire, Performance Grilles, LUX H8, M-Sport Rear Bumper, JB4 Stage 2, BMS Downpipe, BMS Intake.
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05-23-2012, 07:17 PM	#13
BMW_Belgier Lieutenant Colonel 99 Rep 1,597 Posts Drives: E92 335xi n55 Join Date: May 2012 Location: Switzerland iTrader: (0)	I would go for the catted midpipes and cattless dp... Its a shame that i can't drive here with cattless dp...
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05-23-2012, 07:53 PM	#14
SRT14PimPin07 Major 78 Rep 1,035 Posts Drives: X5 Join Date: Jun 2009 Location: Los Angeles iTrader: (4)	Everyone on this forum is so one minded. The guy gets it Catless is better than Catted obviously. But he cares more about the stinky smell than the HP he's getting out of the Catless DP. I would honestly like to go down this route as well because I wouldn't want my 50K BMW to smell like shit either. But at the same time, I'd like a high flow DP so I can run MAP 2 without using NOS octane booster, which I heard makes your engine yellow. Is there anyone running a catted DP that can provide us with some info? __________________ 2011 Alpine White E92 335i M-Sport N55 Engine
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05-23-2012, 08:43 PM	#15
torqnDC Private 5 Rep 99 Posts Drives: 2011 335i E92 Join Date: Feb 2011 Location: Arlington, VA iTrader: (0)	What specific info are you looking for? Don't have any before/after dyno numbers (just after) but can provide some insight from the daily driver perspective. The catted AR downpipe plus JB4 map 2 sounds great, performs well, and doesn't give the smell nearly as badly as the catless variant. If you're in a garage with the windows down and stopped you might smell a little bit, or the car behind you might smell a bit when you're running rich... but again as long as you're not looking for the full power and just want the sound, smell and ability to run map2 it's definitely worth it. Running AR catted + vanguard exhaust the car sounds like a beast.
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05-23-2012, 09:52 PM	#16
fasteddie222 Colonel 105 Rep 2,317 Posts Drives: e30 and x1 35i Join Date: Dec 2007 Location: Miami/Central Florida iTrader: (8)	I just bought iCarbon catted dps but i havent installed them yet... I really dont wat my car to smell like crap also my friend has catless and his car is always dirty in the back... Is there really such a big difference in HP gain between catted and catless? __________________ [SIGPIC][/SIGPIC]
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05-24-2012, 07:02 AM	#18
torqnDC Private 5 Rep 99 Posts Drives: 2011 335i E92 Join Date: Feb 2011 Location: Arlington, VA iTrader: (0)	No, ordinarily with the windows down at a stoplight you won't smell it. If there's a strong wind from the rear of the car you might smell a bit, but even so it's not very noticeable. It's the car behind you when you get on the gas in the low RPM range that will smell a bit, haha. 305HP/355Ft-lbs on a DynoDynamics, which I'm told would read equivalent to 345HP/403Ft-lbs on a DynoJet.
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05-24-2012, 07:26 AM	#19
Marc R Mr Anderson,we've been expecting you... 25 Rep 206 Posts Drives: X3 M40i Join Date: May 2012 Location: Dept. of Justice iTrader: (0)	Catted mid pipes would be my choice...(good info again!)
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05-24-2012, 08:21 AM	#20
BMW_Belgier Lieutenant Colonel 99 Rep 1,597 Posts Drives: E92 335xi n55 Join Date: May 2012 Location: Switzerland iTrader: (0)	Yes catted midpipes I would however organize steel cats (dont know how to call them in english) so you dont burn them out without pre-catted dps
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05-25-2012, 07:37 PM	#22
BMW Junge für Leben Second Lieutenant 20 Rep 213 Posts Drives: LCI E90 335i Join Date: Apr 2012 Location: Santa Barbara CA iTrader: (0)	i have an AR catless dp, definitely recommend it. Even though your going catted, i'd say AR!
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