Secondary Cat Delete & Dinan Rear Exhaust

blackbeast535 · 02-03-2012, 10:31 PM

I looked at more expensive Challenge & Fabspeed X-Pipes with the secondary cat delete but decided to just remove the secondary cats on the factory mid section.

It’s amazing how such a small mod makes a huge difference in sound & power.

Sure the primary cat delete makes more power but the secondary is still restrictive. Once I drove the car I immediately noticed the car pulls harder, shits seem crisper (6 MT) and the damn thing just screams above 3K rpm’s. Still no drone with the Dinan rear section but the car is noticeably louder then before under acceleration.

Here are a few pics & video from the install.

j2m · 02-03-2012, 10:45 PM

WOW

Sounds really good

looks great too! Wish Dinan would get all 4 pipes goin!

edwinm3 · 02-04-2012, 12:05 AM

sounds really nice, good job.

e92Mjunky · 02-04-2012, 09:32 PM

well done, looks quality

swifty · 01-11-2014, 06:30 PM

I'm guessing this throws a code?

STi_traitor · 01-16-2014, 09:17 AM

Cool stuff, I am gutting a complete OEM system to see how it sounds. Should be interesting.

dereksM3 · 01-16-2014, 12:08 PM

Any pictures of the inside of the secondary catalysts?

bdaddylo · 01-16-2014, 08:44 PM

Quote:

Originally Posted by swifty

I'm guessing this throws a code?

Why??? The O2 sensors are between the primary and secondary cats.

Bx Tpr · 01-16-2014, 10:37 PM

Sounds good OP

Quote:

Originally Posted by STi_traitor

Cool stuff, I am gutting a complete OEM system to see how it sounds. Should be interesting.

I've been thinking about doing this myself. Looking forward to your review.

STi_traitor · 01-17-2014, 03:20 AM

Quote:

Originally Posted by Bx Tpr

Sounds good OP

I've been thinking about doing this myself. Looking forward to your review.

Wasn't planning on a review but I guess it wouldn't hurt because I have two axle backs (ACM Style & OEM) to compare with the OEM catless (resonators included) exhaust.

JayR_e92 · 02-15-2020, 11:23 PM

Quote:

Originally Posted by blackbeast535

I looked at more expensive Challenge & Fabspeed X-Pipes with the secondary cat delete but decided to just remove the secondary cats on the factory mid section.

It’s amazing how such a small mod makes a huge difference in sound & power.

Sure the primary cat delete makes more power but the secondary is still restrictive. Once I drove the car I immediately noticed the car pulls harder, shits seem crisper (6 MT) and the damn thing just screams above 3K rpm’s. Still no drone with the Dinan rear section but the car is noticeably louder then before under acceleration.

Here are a few pics & video from the install.

Sorry to resurrect such an old thread but I am curious, did deleting the secondary cats ever throw a code?

Thank you in advance

02-03-2012, 10:31 PM	#1
blackbeast535 Private First Class 23 Rep 145 Posts Drives: 2008 M3 6MT Jerez Black Join Date: Aug 2011 Location: MD iTrader: (0)	Secondary Cat Delete & Dinan Rear Exhaust - Video & Pics I looked at more expensive Challenge & Fabspeed X-Pipes with the secondary cat delete but decided to just remove the secondary cats on the factory mid section. It’s amazing how such a small mod makes a huge difference in sound & power. Sure the primary cat delete makes more power but the secondary is still restrictive. Once I drove the car I immediately noticed the car pulls harder, shits seem crisper (6 MT) and the damn thing just screams above 3K rpm’s. Still no drone with the Dinan rear section but the car is noticeably louder then before under acceleration. Here are a few pics & video from the install. Attached Images __________________ E90 M3 Jerez Black/Bamboo Beige 6MT - BMW CCA Dinan Rear Exhaust, Secondary Cat Delete, Dinan High Flow Carbon Fiber Intake, IND Painted Reflectors, BMW Edition Grills
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02-03-2012, 10:45 PM	#2
j2m Colonel 180 Rep 2,446 Posts Drives: '11 E92 M3 DCT Join Date: Jun 2011 Location: Calgary, Ab iTrader: (8) Garage List 2011 BMW E92 M3 [10.00]	WOW Sounds really good looks great too! Wish Dinan would get all 4 pipes goin! __________________ 11' E92 M3 Space Grey \| DCT \| ESS VT2- 625 \| Gintani Race (valved) + Quad Res Catless X-Pipe \| KW Sleeve's \| GC Camber Plates\|Arkym Diffuser \| Vorsteiner VRS Lip \| P3 Boost Guage \| Stud Conversion PHOTO's: Click Here ESS VT2 625 PHOTOS: Click Here
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02-04-2012, 12:05 AM	#3
edwinm3 Brigadier General 974 Rep 3,998 Posts Drives: F82 Join Date: Nov 2011 Location: Broward iTrader: (32)	sounds really nice, good job. __________________ Grigio Telesto M4, 6MT. Coyote 5.0 F-150 991 GT3
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02-04-2012, 09:32 PM	#4
e92Mjunky First Lieutenant 111 Rep 395 Posts Drives: E46 M3 S65 swap Join Date: Mar 2011 Location: Austin, TX iTrader: (0)	well done, looks quality
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01-11-2014, 06:30 PM	#5
swifty Colonel 314 Rep 2,448 Posts Drives: F80, Levante & Tesla 100D Join Date: Aug 2008 Location: canada iTrader: (7)	I'm guessing this throws a code?
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01-16-2014, 09:17 AM	#6
STi_traitor Banned 104 Rep 996 Posts Drives: BTG 2014 - 3 Laps Join Date: Sep 2012 Location: Bavaria iTrader: (0)	Cool stuff, I am gutting a complete OEM system to see how it sounds. Should be interesting.
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01-16-2014, 12:08 PM	#7
dereksM3 Captain 270 Rep 888 Posts Drives: 2016 MG 340i M-Sport Join Date: Mar 2009 Location: Lynnwood, WA iTrader: (3)	Any pictures of the inside of the secondary catalysts?
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