Removing the Rear Exhaust Section ...And Driving??? - BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)

geared · 01-09-2013, 08:13 PM

I am getting ready to install my Dinan exhaust. but want to remove the rear exhaust section, so I can make the cut with the exhaust off the car. I'd like to remove the exhaust tonight in order to do it in stages, however, may not get to it until Saturday.

My question is - will I experience any ill effects to the car/engine or the flange, heat shields, or ANYTHING by driving around with it removed?

I can imagine at idle it would get hot right there....

jb

Pig Farmer · 01-09-2013, 08:24 PM

Did you remove your exhaust yet? I have an OEM exhaust in my garage. You can borrow it, or cut mine and swap it for your OEM once you get the Dinan installed. I could meet you at the Abacoa Publix with 10 minutes notice.

NihonX · 01-09-2013, 08:26 PM

Nope.
As long as you still have your downpipes and O2 Sensors in place, you should not have any negative effects. It'll be very loud and the underside of your car may turn black from exhaust but if you don't get pulled over for noise violation, you'll be alright.

b1aze · 01-09-2013, 08:26 PM

Aside from the sound, it should be fine. If you have local cops that are against aftermarket/modified exhausts, im sure they wont love a FULL muffler delete (literally).

Aside from the unbearable noise, it wont damage anything.

geared · 01-09-2013, 08:38 PM

Not yet....I appreciate the offer Pig, but if I can run it for a few days without ANY issues, I wont care.

geared · 01-09-2013, 08:40 PM

thanks Nihon/b1aze

Pig Farmer · 01-09-2013, 08:47 PM

Gotcha. My only thought is if you remove the axle-back, the midpipe is not very well supported from about halfway back. You may hear the midpipe bounce around over bumps. Also, the midpipe ends in front of the rear axle and pretty close to the differential. Don't cook your differential seals.

gwhiz · 01-09-2013, 08:51 PM

It's so funny that you just asked that. I was about to start a post asking the exact same thing. My point is, in contrast, if you are adding nothing more than more piping and some tips, why not just remove the rear section entirely? no tips could be even cleaner than the aftermarket options (if you're into that look). Would it be any louder than a muffler delete?

b1aze · 01-09-2013, 09:02 PM

Quote:

Originally Posted by gwhiz

It's so funny that you just asked that. I was about to start a post asking the exact same thing. My point is, in contrast, if you are adding nothing more than more piping and some tips, why not just remove the rear section entirely? no tips could be even cleaner than the aftermarket options (if you're into that look). Would it be any louder than a muffler delete?

Much more drone IMO. You'll almost be sitting on the end of the pipe

Suds · 01-09-2013, 09:04 PM

Might be fun to remove the rear section for that next night at the drag strip.

jsmonet · 01-09-2013, 09:32 PM

No exhaust is a good exhaust with a turbo. It'll just be stupid loud.

135Pats · 01-09-2013, 09:42 PM

Film some wot

cheshirecat79 · 01-10-2013, 02:36 PM

Funny you guys bring this up. Here's some WOT for you. It actually sounded really good. tried to move back at the end so it wasn't so distorted.

but yes, it was loud, lol

Sarge135 · 01-10-2013, 02:37 PM

That was priceless!!! Sounded awesome!

Quote:

Originally Posted by cheshirecat79

Funny you guys bring this up. Here's some WOT for you. It actually sounded really good. tried to move back at the end so it wasn't so distorted.

but yes, it was loud, lol

Wazbmw135 · 01-14-2013, 06:35 PM

Looks like i found my next mod... cheapest one out there too.. only Hack saw required hahaha

Freon · 01-15-2013, 05:03 PM

You can get carbon dust and soot build up on the bottom of your car near where the exhaust ends, but you should be fine for a few days.

geared · 01-15-2013, 11:48 PM

Wow gents....just finished.

I will try to take vids. Once I put the Dinan on, I definitely want to explore a cutout if I can generate the same sound.....removing the exhaust from the axle awakens the beast within....

jb

01-09-2013, 08:13 PM	#1
geared Lieutenant Drives: No car Join Date: Apr 2012 Location: jupiter, fl Posts: 404 iTrader: (1)	Removing the Rear Exhaust Section ...And Driving??? I am getting ready to install my Dinan exhaust. but want to remove the rear exhaust section, so I can make the cut with the exhaust off the car. I'd like to remove the exhaust tonight in order to do it in stages, however, may not get to it until Saturday. My question is - will I experience any ill effects to the car/engine or the flange, heat shields, or ANYTHING by driving around with it removed? I can imagine at idle it would get hot right there.... jb
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01-09-2013, 08:26 PM	#3
NihonX The Game Drives: 2011 VO 1M Join Date: Sep 2008 Location: 661/415 Posts: 726 iTrader: (6)	Nope. As long as you still have your downpipes and O2 Sensors in place, you should not have any negative effects. It'll be very loud and the underside of your car may turn black from exhaust but if you don't get pulled over for noise violation, you'll be alright. __________________ 2011 VO 1M: JB4(G5) -- HPF FMIC -- Gen. DCI -- Stett CP/HKS BOV -- BMS WW Meth -- CDV Delete

01-09-2013, 08:51 PM	#8
gwhiz Private Drives: 2012 135i Convertible/M Sport Join Date: Oct 2011 Location: Arizona Posts: 67 iTrader: (0)	It's so funny that you just asked that. I was about to start a post asking the exact same thing. My point is, in contrast, if you are adding nothing more than more piping and some tips, why not just remove the rear section entirely? no tips could be even cleaner than the aftermarket options (if you're into that look). Would it be any louder than a muffler delete? __________________ Jet Black 2012 BMW 135i E88 / M Sport Package / DCT / BMW PPK Stage 1 / Scopione Front Splitters and Rear Diffuser

01-09-2013, 09:32 PM	#11
jsmonet First Lieutenant Drives: 2012 135 Join Date: Nov 2011 Location: so cal Posts: 395 iTrader: (2)	No exhaust is a good exhaust with a turbo. It'll just be stupid loud. __________________ 2012 135i. dinan stg3 \| ohlins dfv \| assorted rice \| hardest parker evAr

01-09-2013, 09:42 PM	#12
135Pats Gooby Pls. Drives: 135i Join Date: May 2012 Location: Maryland Posts: 1,558 iTrader: (0)	Film some wot __________________ E88 FBO N54 Alpinweiss/Coral Red/Meisterschaft Race/Berk Resonated/Macht Schnell 3"/ER CP/Synapse/VRSF FMIC/BMS DCI/BMS Thermostat Delete/Rob Beck PCV/BMS OCC/Cobb 4.02/Alpina TCU Flash/Icarbon/3D Design/Cyba

01-09-2013, 08:24 PM	#2
Pig Farmer Lieutenant Drives: 2009 BMW 135i Join Date: May 2010 Location: Florida Posts: 488 iTrader: (0)	Did you remove your exhaust yet? I have an OEM exhaust in my garage. You can borrow it, or cut mine and swap it for your OEM once you get the Dinan installed. I could meet you at the Abacoa Publix with 10 minutes notice.

01-09-2013, 08:26 PM	#4
b1aze Through detox Drives: 2010 135i Join Date: Aug 2012 Location: Marlborough, MA Posts: 1,074 iTrader: (13)	Aside from the sound, it should be fine. If you have local cops that are against aftermarket/modified exhausts, im sure they wont love a FULL muffler delete (literally). Aside from the unbearable noise, it wont damage anything.

01-09-2013, 08:38 PM	#5
geared Lieutenant Drives: No car Join Date: Apr 2012 Location: jupiter, fl Posts: 404 iTrader: (1)	Not yet....I appreciate the offer Pig, but if I can run it for a few days without ANY issues, I wont care.

01-09-2013, 08:40 PM	#6
geared Lieutenant Drives: No car Join Date: Apr 2012 Location: jupiter, fl Posts: 404 iTrader: (1)	thanks Nihon/b1aze

01-09-2013, 08:47 PM	#7
Pig Farmer Lieutenant Drives: 2009 BMW 135i Join Date: May 2010 Location: Florida Posts: 488 iTrader: (0)	Gotcha. My only thought is if you remove the axle-back, the midpipe is not very well supported from about halfway back. You may hear the midpipe bounce around over bumps. Also, the midpipe ends in front of the rear axle and pretty close to the differential. Don't cook your differential seals.

01-09-2013, 09:04 PM	#10
Suds One Addict Drives: 2011 135i 6mt Join Date: Aug 2010 Location: Lone Star State Posts: 204 iTrader: (0)	Might be fun to remove the rear section for that next night at the drag strip.

01-10-2013, 02:36 PM	#13
cheshirecat79 Second Lieutenant Drives: 370z & 135i Join Date: Dec 2012 Location: Port Saint Lucie, FL Posts: 231 iTrader: (0)	Funny you guys bring this up. Here's some WOT for you. It actually sounded really good. tried to move back at the end so it wasn't so distorted. but yes, it was loud, lol

01-14-2013, 06:35 PM	#15
Wazbmw135 New Member Drives: 135 i Join Date: Jan 2013 Location: Savannah GA Posts: 6 iTrader: (0)	Looks like i found my next mod... cheapest one out there too.. only Hack saw required hahaha

01-15-2013, 05:03 PM	#16
Freon First Lieutenant Drives: 2009 135i Join Date: Nov 2007 Location: Indianapolis Posts: 396 iTrader: (2)	You can get carbon dust and soot build up on the bottom of your car near where the exhaust ends, but you should be fine for a few days. __________________ 2009 BMW 135i, 6 MT, M Sport, DIY DCI, Cobb AP, Apex 18x8.5+9.5, 235/265 Starspecs

01-15-2013, 11:48 PM	#17
geared Lieutenant Drives: No car Join Date: Apr 2012 Location: jupiter, fl Posts: 404 iTrader: (1)	Wow gents....just finished. I will try to take vids. Once I put the Dinan on, I definitely want to explore a cutout if I can generate the same sound.....removing the exhaust from the axle awakens the beast within.... jb

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