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**335i** · 05-15-2011, 02:44 AM

who has sec cats deleted does it worth wont be i disapointed in sound, any probs codes and etc, planing install catless dps (ar)

maybe some videos sec cat delete + catless dps+stock exhaust, or cat delete+catless dps

thanks

enrita · 05-15-2011, 05:22 AM

no probs with codes since the lambda are in the dps plus you have the procede.
I would not go catless, been there done that. It smells and its loud plus you can get a raspy sound.
You wont gain that much completely catless , just get the AR catless dps and keep the secondary or exchange them with some 100 CELL HJS race cats.

Rotorocious · 05-15-2011, 06:48 AM

Did it. Catless downpipes and no secondaries. Was bored one day and had them replaced with straight pipe.
Sounded raspy as hell and went back with some resonators and had them welded on in place of where the cats went.
I posted a video in the exhaust thread recently if you want to look.

tscdennab · 05-15-2011, 06:55 AM

On the coupe (which does not have a resonated x-pipe), the sound will be very raspy if you remove both the primary and secondary cats. It will also be very loud. You need to weld 2 of these in place of the secondary cats:

http://vibrantperformance.com/catalo...roducts_id=290

On the sedan, you will not have problems because there is the stock resonated x-pipe which takes care of the rasp (I have seen a sedan with both sets of cats removed and it sounds almost stock-like).

**335i** · 05-17-2011, 11:26 AM

Quote:

Originally Posted by tscdennab

On the coupe (which does not have a resonated x-pipe), the sound will be very raspy if you remove both the primary and secondary cats. It will also be very loud. You need to weld 2 of these in place of the secondary cats:

http://vibrantperformance.com/catalo...roducts_id=290

On the sedan, you will not have problems because there is the stock resonated x-pipe which takes care of the rasp (I have seen a sedan with both sets of cats removed and it sounds almost stock-like).

so that www is correct to buy those pipes for coupe ?

**335i** · 05-17-2011, 11:56 AM

Quote:

Originally Posted by Rotorocious

Did it. Catless downpipes and no secondaries. Was bored one day and had them replaced with straight pipe.
Sounded raspy as hell and went back with some resonators and had them welded on in place of where the cats went.
I posted a video in the exhaust thread recently if you want to look.

so it mean that if u delete cats and then install again resonators maybe its uselles thing with those cats delete

if you say u deleted and then again installed resonators, maybe i should leave cats as it is

enrita · 05-17-2011, 12:08 PM

leave the secondary in.

bulldog_yyc · 05-17-2011, 12:12 PM

With secondary cats and resonator removed, even the stock exhaust sounds quite raspy with catless DPs.

platinumcars · 05-17-2011, 01:49 PM

hey I have the secondary cats deleted and mufflers deleted with 3 inch tips, sounds reaaaaaallly bad ass but i feel like i lost on the low end.

Rotorocious · 05-17-2011, 01:59 PM

Quote:

Originally Posted by turkish335

With secondary cats and resonator removed, even the stock exhaust sounds quite raspy with catless DPs.

catless dp
secondary cats removed, vibrant resonators added in place
stock mufflers

**335i** · 05-19-2011, 02:07 AM

thanks for all answers, i think i leave it as it is for time beeing

05-15-2011, 02:44 AM	#1
335i Colonel 184 Rep 2,320 Posts Drives: TOYOTA & 2008 E92 335i 6MT Join Date: Jul 2007 Location: Swiss iTrader: (4) Garage List 2008 335i [9.00]	calling people with... who has sec cats deleted does it worth wont be i disapointed in sound, any probs codes and etc, planing install catless dps (ar) maybe some videos sec cat delete + catless dps+stock exhaust, or cat delete+catless dps thanks __________________ E92 335i Black Saphire 6MT PROcede V5, BMS DCI, Big Tom IC, AR CL-DP's 3", AR Design OC, Forge DV's, OEM M3 side skirts, BMW Performance Wheels 19 inch 269 Black Gloss+Continental ContiSportContact 5P (400hp and 550nm) https://www.youtube.com/user/aistis7..._as=subscriber
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05-15-2011, 05:22 AM	#2
enrita Major General 161 Rep 7,377 Posts Drives: 335i - Big turbos Join Date: Sep 2008 Location: Italian in Sweden iTrader: (0)	no probs with codes since the lambda are in the dps plus you have the procede. I would not go catless, been there done that. It smells and its loud plus you can get a raspy sound. You wont gain that much completely catless , just get the AR catless dps and keep the secondary or exchange them with some 100 CELL HJS race cats. __________________ 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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05-15-2011, 06:48 AM	#3
Rotorocious Lieutenant Colonel 103 Rep 1,520 Posts Drives: 335xi Join Date: May 2010 Location: Colorado iTrader: (3)	Did it. Catless downpipes and no secondaries. Was bored one day and had them replaced with straight pipe. Sounded raspy as hell and went back with some resonators and had them welded on in place of where the cats went. I posted a video in the exhaust thread recently if you want to look.
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05-15-2011, 06:55 AM	#4
tscdennab Banned 151 Rep 1,809 Posts Drives: BMW 335i Join Date: Oct 2010 Location: Europe iTrader: (0) Garage List 2008 BMW [6.24]	On the coupe (which does not have a resonated x-pipe), the sound will be very raspy if you remove both the primary and secondary cats. It will also be very loud. You need to weld 2 of these in place of the secondary cats: http://vibrantperformance.com/catalo...roducts_id=290 On the sedan, you will not have problems because there is the stock resonated x-pipe which takes care of the rasp (I have seen a sedan with both sets of cats removed and it sounds almost stock-like).
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05-17-2011, 12:08 PM	#7
enrita Major General 161 Rep 7,377 Posts Drives: 335i - Big turbos Join Date: Sep 2008 Location: Italian in Sweden iTrader: (0)	leave the secondary in. __________________ 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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05-17-2011, 12:12 PM	#8
bulldog_yyc Major General 130 Rep 5,040 Posts Drives: GT3RS Join Date: Oct 2008 Location: probably work iTrader: (28)	With secondary cats and resonator removed, even the stock exhaust sounds quite raspy with catless DPs.
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05-17-2011, 01:49 PM	#9
platinumcars Private 1 Rep 88 Posts Drives: e90 335 Join Date: Oct 2010 Location: richmond hill iTrader: (0)	hey I have the secondary cats deleted and mufflers deleted with 3 inch tips, sounds reaaaaaallly bad ass but i feel like i lost on the low end.
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05-19-2011, 02:07 AM	#11
335i Colonel 184 Rep 2,320 Posts Drives: TOYOTA & 2008 E92 335i 6MT Join Date: Jul 2007 Location: Swiss iTrader: (4) Garage List 2008 335i [9.00]	thanks for all answers, i think i leave it as it is for time beeing __________________ E92 335i Black Saphire 6MT PROcede V5, BMS DCI, Big Tom IC, AR CL-DP's 3", AR Design OC, Forge DV's, OEM M3 side skirts, BMW Performance Wheels 19 inch 269 Black Gloss+Continental ContiSportContact 5P (400hp and 550nm) https://www.youtube.com/user/aistis7..._as=subscriber
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