Burble with stock DP

Skylerr91 · 03-05-2019, 10:55 PM

I am planning on going stage 1 BM3 soon, I wish I can go stage 2 but im moving to California soon so I cannot go catless. I know with BM3 I can adjust the burbles but if I have a stock downpipe/cat would any increase in the burbles eat the cat? I know turning the aggression up all the way on the stock cat will destroy it but do I have to leave the burbles exactly the same as stock?

TheShadow · 03-05-2019, 11:15 PM

It could, honestly with stock dp and no tune i get burbles with my full AWE exhaust lolol

jmack · 03-06-2019, 12:15 PM

You should be fine with mild burbles. MPPK adds more aggressive burbles than BM3's mild and that still uses the stock DP.

mike@x-ph.com · 03-06-2019, 08:33 PM

I run aggressive burble on my car with stock cat

F30NFifty5 · 03-07-2019, 08:30 AM

Delete your resonator and you'll get more pops and burbles with the stock downpipe.... No drone inside the cabin.. Been running resonator delete for a month now and I don't regret it.

nawfoo · 03-07-2019, 08:57 PM

I have a stock dp with mild burble setting with my bm3 and I barely get any burbles.

Alpine.N55 · 03-07-2019, 09:41 PM

Running MHD burbles (medium aggressiveness for 1.5s @ 2k RPMs) with the stock downpipe, resonator delete, and an electronic cutout. I switch to sport half way through the video which is when the burbles are active.

ceedawg · 03-10-2019, 04:24 PM

Quote:

Originally Posted by Alpine.N55

Running MHD burbles (medium aggressiveness for 1.5s @ 2k RPMs) with the stock downpipe, resonator delete, and an electronic cutout. I switch to sport half way through the video which is when the burbles are active.

SWEET!!!

which cutout did you use? I would do this but closer to the front of the car not far from the dp where the turbo would like this even more.

Alpine.N55 · 03-10-2019, 04:50 PM

Quote:

Originally Posted by ceedawg

SWEET!!!

which cutout did you use? I would do this but closer to the front of the car not far from the dp where the turbo would like this even more.

eBays Finest: https://www.ebay.com/itm/3-Inch-76mm...53.m2749.l2649

Had a buddy get it and install exactly where you're looking to do it, sticks down a little but it does work.

kkkevon · 03-10-2019, 10:28 PM

Quote:

Originally Posted by TheShadow

It could, honestly with stock dp and no tune i get burbles with my full AWE exhaust lolol

Same here.

hudsonryan · 03-11-2019, 12:33 PM

In the BM3 Facebook group I have seen some posts regarding life expectancy with the Stock DP + Burbles. Seems that there have not been many reported 'destroyed' downpipes, but it could be a longer term deal.

Don't go full aggressive and you should be totally fine in the grand scheme of things.

scostu · 06-01-2019, 06:53 PM

Quote:

Originally Posted by mike@x-ph.com

I run aggressive burble on my car with stock cat

How long have you running this setup?

No problems still?

mike@x-ph.com · 06-03-2019, 11:56 AM

Quote:

Originally Posted by scostu

How long have you running this setup?

No problems still?

Couple months, no problems yet.

yoon_209 · 06-03-2019, 12:15 PM

you have a 2015, you can definitely go catless for a couple years, California just passed a new law that exempts new cars from getting a smog for 8 years.

i have a 2013 and was about to get mine removed but i have two years left!

jack10525 · 06-03-2019, 09:07 PM

Quote:

Originally Posted by Alpine.N55

Running MHD burbles (medium aggressiveness for 1.5s @ 2k RPMs) with the stock downpipe, resonator delete, and an electronic cutout. I switch to sport half way through the video which is when the burbles are active.

What cut out do you have? Any issues with it getting stuck open, closed
or gummed up with carbon? How much was it with all parts installed?

F30boyy · 07-19-2019, 06:15 PM

I have the n20 engine, Ever since deleting my muffler(1st) and resonator (2nd) my car pops and bangs keep getting louder. Also starting to get abit of the rotten egg smell, could this be due to me blowing out my cat slowly? I do drive pretty aggressive (letting car rev out and pop) still have my stock downpipe and no tune

scostu · 07-20-2019, 08:39 AM

Quote:

Originally Posted by F30boyy

I have the n20 engine, Ever since deleting my muffler(1st) and resonator (2nd) my car pops and bangs keep getting louder. Also starting to get abit of the rotten egg smell, could this be due to me blowing out my cat slowly? I do drive pretty aggressive (letting car rev out and pop) still have my stock downpipe and no tune

Doubtful ....everything you have done is after the Catalytic converter.

How many miles?
Are you still on original spark plugs?

03-05-2019, 10:55 PM	#1
Skylerr91 New Member 1 Rep 11 Posts Drives: 2015 f32 435i Join Date: May 2018 Location: New York iTrader: (0)	Burble with stock DP I am planning on going stage 1 BM3 soon, I wish I can go stage 2 but im moving to California soon so I cannot go catless. I know with BM3 I can adjust the burbles but if I have a stock downpipe/cat would any increase in the burbles eat the cat? I know turning the aggression up all the way on the stock cat will destroy it but do I have to leave the burbles exactly the same as stock?
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03-05-2019, 11:15 PM	#2
TheShadow Lieutenant 270 Rep 455 Posts Drives: 335i M sport Join Date: Aug 2018 Location: louisiana iTrader: (1)	It could, honestly with stock dp and no tune i get burbles with my full AWE exhaust lolol
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03-06-2019, 12:15 PM	#3
jmack Enlisted Member 21 Rep 47 Posts Drives: 2017 440i GC Join Date: Oct 2018 Location: NY iTrader: (0)	You should be fine with mild burbles. MPPK adds more aggressive burbles than BM3's mild and that still uses the stock DP. __________________ 2017 440i Gran Coupe M Sport \| BM3 Stage 1
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03-06-2019, 08:33 PM	#4
mike@x-ph.com BimmerPost Supporting Vendor 10965 Rep 120,331 Posts Drives: 2007 e92 335i / 2013 F30 328 Join Date: Sep 2013 Location: Las Vegas iTrader: (20)	I run aggressive burble on my car with stock cat __________________ * TAX SALE * VRSF: 10% OFF Active Autowerke: Additional 10% OFF Dinan: New Lower Prices Phone 725-221-5267 \|\| website www.x-ph.com
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03-07-2019, 08:30 AM	#5
F30NFifty5 Private First Class 56 Rep 173 Posts Drives: F30 335i XDrive 6mt / e83 X3 Join Date: Nov 2018 Location: Queens, New York iTrader: (0)	Delete your resonator and you'll get more pops and burbles with the stock downpipe.... No drone inside the cabin.. Been running resonator delete for a month now and I don't regret it.
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03-07-2019, 08:57 PM	#6
nawfoo Private First Class 64 Rep 177 Posts Drives: 2015 335i M-Sport 6 MT Join Date: Jan 2019 Location: Las Vegas iTrader: (0)	I have a stock dp with mild burble setting with my bm3 and I barely get any burbles.
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03-07-2019, 09:41 PM	#7
Alpine.N55 Private 22 Rep 59 Posts Drives: 2015 BMW 335i Join Date: Jan 2019 Location: California iTrader: (1)	Running MHD burbles (medium aggressiveness for 1.5s @ 2k RPMs) with the stock downpipe, resonator delete, and an electronic cutout. I switch to sport half way through the video which is when the burbles are active. __________________ 2015 BMW 335i FBO Full mod list: www.n55.life @alpine.n55
	Appreciate 1 ceedawg435.50 Quote

03-11-2019, 12:33 PM	#11
hudsonryan Enlisted Member 7 Rep 32 Posts Drives: 2015 335i Join Date: Mar 2019 Location: Austin iTrader: (0)	In the BM3 Facebook group I have seen some posts regarding life expectancy with the Stock DP + Burbles. Seems that there have not been many reported 'destroyed' downpipes, but it could be a longer term deal. Don't go full aggressive and you should be totally fine in the grand scheme of things.
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06-03-2019, 12:15 PM	#14
yoon_209 Masterchief 257 Rep 820 Posts Drives: 13' BMW 335i Join Date: Aug 2016 Location: Irvine, CA iTrader: (0)	you have a 2015, you can definitely go catless for a couple years, California just passed a new law that exempts new cars from getting a smog for 8 years. i have a 2013 and was about to get mine removed but i have two years left! __________________ BMS Intake \| ER CP \| VRSF FMIC & DP \| MPE \| BM3 \| Vorsteiner VFF-03 \| H&R Sport \| CF Everythang
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07-19-2019, 06:15 PM	#16
F30boyy Registered 0 Rep 1 Posts Drives: 2012 F30 328i rwd Join Date: Jul 2019 Location: Ontario iTrader: (0)	Burbles getting LOUDER I have the n20 engine, Ever since deleting my muffler(1st) and resonator (2nd) my car pops and bangs keep getting louder. Also starting to get abit of the rotten egg smell, could this be due to me blowing out my cat slowly? I do drive pretty aggressive (letting car rev out and pop) still have my stock downpipe and no tune
	Appreciate 0 Quote

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