Vishnu Catted DP vs AR Catted DP - BMW 3-Series (E90 E92) Forum

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 Drives: 2011 335i Sedan 6MT Join Date: May 2012 Location: Texas Posts: 33 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!
	Tweet

05-23-2012, 09:28 AM	#3
eyim1988 Major Drives: 2011 335i coupe Join Date: Feb 2011 Location: Los Angeles, CA Posts: 1,246 iTrader: (2)	Might as well stay with the stock dp __________________ Procede v5, ER Competition FMIC, ER Chargepipe, HP Autowerks foam filter, Custom turboback exhaust, 369 whp/444 torque (no intercooler)

05-23-2012, 10:19 AM	#4
steelersfan First Lieutenant Drives: 11 335i E90 M-Sport Join Date: Nov 2011 Location: Virginia Beach, VA Posts: 328 iTrader: (1) 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 \|

05-23-2012, 10:33 AM	#6
Mike@N54Tuning.com BimmerPost Supporting Vendor Drives: 07335i Join Date: Dec 2008 Location: Earth Posts: 12,213 iTrader: (77)	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 __________________ Lowest Price GUARANTEED on ALL PRODUCTS!! JB4 G5 On Sale - FREE Shipping Click Me - NEW JB4(N55) & DCI's $95.00 NEW F30-328 N20 Tune(Stage1) BMS Oil Catch Can (On Sale)

05-23-2012, 03:43 PM	#10
RedmangoHTX Enlisted Member Drives: 2011 335i Sedan 6MT Join Date: May 2012 Location: Texas Posts: 33 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.

05-23-2012, 04:30 AM	#2
BMW_Belgier Major Drives: E92 335xi n55 Join Date: May 2012 Location: Switzerland Posts: 1,352 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

05-23-2012, 02:20 PM	#9
BMW_Belgier Major Drives: E92 335xi n55 Join Date: May 2012 Location: Switzerland Posts: 1,352 iTrader: (0)	The X-Drive models have catted midpipes if you want OEM

05-23-2012, 03:48 PM	#11
RedmangoHTX Enlisted Member Drives: 2011 335i Sedan 6MT Join Date: May 2012 Location: Texas Posts: 33 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.

05-23-2012, 07:17 PM	#13
BMW_Belgier Major Drives: E92 335xi n55 Join Date: May 2012 Location: Switzerland Posts: 1,352 iTrader: (0)	I would go for the catted midpipes and cattless dp... Its a shame that i can't drive here with cattless dp...

05-23-2012, 07:53 PM	#14
SRT14PimPin07 Captain Drives: BMW 335i Coupe Join Date: Jun 2009 Location: Los Angeles Posts: 722 iTrader: (2)	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

05-23-2012, 08:43 PM	#15
torqnDC Private Drives: 2011 335i E92 / 2010 Maxima Join Date: Feb 2011 Location: Arlington, VA Posts: 99 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.

05-23-2012, 09:52 PM	#16
fasteddie222 Lieutenant Colonel Drives: 2011 e92 335i Join Date: Dec 2007 Location: Miami/Central Florida Posts: 1,656 iTrader: (4)	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? __________________

05-24-2012, 07:02 AM	#18
torqnDC Private Drives: 2011 335i E92 / 2010 Maxima Join Date: Feb 2011 Location: Arlington, VA Posts: 99 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.

05-24-2012, 07:26 AM	#19
Marc R Mr Anderson,we've been expecting you... Drives: 335i Touring Join Date: May 2012 Location: Dept. of Justice Posts: 116 iTrader: (0)	Catted mid pipes would be my choice...(good info again!) __________________ 335i Touring, Le Mans Blue, Oyster, Procede, Riss Racing DP's,19" Miro111's....catback performance exhaust Audi S8 V10 no mods

05-24-2012, 08:21 AM	#20
BMW_Belgier Major Drives: E92 335xi n55 Join Date: May 2012 Location: Switzerland Posts: 1,352 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

05-25-2012, 07:37 PM	#22
BMW Junge für Leben Second Lieutenant Drives: LCI E90 335i Join Date: Apr 2012 Location: Santa Barbara CA Posts: 216 iTrader: (0)	i have an AR catless dp, definitely recommend it. Even though your going catted, i'd say AR!

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