Which exhaust has loudest backfires??

SouthfloridaE92 · 07-02-2013, 08:48 PM

Just wondering what your guys opinions are on which exhaust has the loudest backfires!! Wondering which has the loudest pops and SHOOTS THE MOST FLAMES (i am catless) between shifts, downshifting, letting off at high Rpms or letting it gurgle on low Rpms ! Post your thoughts please

infidel335 · 07-02-2013, 08:57 PM

Straight pipes all the way back, no restrictions and it'll achieve that but everyone will hate you and you might get sick of it.

turb0mik3 · 07-02-2013, 09:10 PM

LAWL... Straight-pipes and run your tune pretty rich and vwala.

But trust me, straight pipes can get VERY annoying, even when they are on a race car.

TheStig · 07-02-2013, 09:20 PM

On my last n54, i had the following setup and it was insane! Fireballs back fires the whole 9

ARDesign 3" Catless dp's
2.75" Straight pipe back no mufflers/resornators nothing

(Warning) have got tickets for this setup it was really really loud.

tcw · 07-02-2013, 10:44 PM

I wouldn't advise it, but disconnecting one of the coil packs should accomplish this.

Edit: This might also cause that bank to run really lean.

infidel335 · 07-03-2013, 05:29 AM

Quote:

Originally Posted by tcw

I wouldn't advise it, but disconnecting one of the coil packs should accomplish this.

Edit: This might also cause that bank to run really lean.

Actually it won't. I had a coil pack go out on me and all it accomplished was misfiring after 1/4 throttle, no flames.

froop · 07-03-2013, 05:36 AM

I have AR catless DPs, CP-E straight mids and CP-E axleback. It gurgles and pops like crazy whenever I let off the throttle and though I've yet to witness it, most likely flames when NLS or 2 stepping. I have heard it backfire when using NLS but the person in the other lane I didn't know so I couldn't ask if they witnessed a flame. Someone told me I flamed when doing a burnout though.

Jeff@TopGearSolutions · 07-03-2013, 10:11 AM

I mean yea a straight pipe exhaust helps but it's not the exhaust that produces flames. It's how your tune is running.

Mainly excess fuel that is un-burnt that hits a hot exhaust causes flames.

07-02-2013, 08:48 PM	#1
SouthfloridaE92 Second Lieutenant 14 Rep 252 Posts Drives: 2011 Black e92 335i 6MT Join Date: Aug 2011 Location: Fort lauderdale iTrader: (2)	Which exhaust has loudest backfires?? Just wondering what your guys opinions are on which exhaust has the loudest backfires!! Wondering which has the loudest pops and SHOOTS THE MOST FLAMES (i am catless) between shifts, downshifting, letting off at high Rpms or letting it gurgle on low Rpms ! Post your thoughts please
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07-02-2013, 08:57 PM	#2
infidel335 Lieutenant 29 Rep 454 Posts Drives: 2009 335xi Join Date: May 2012 Location: NoVA iTrader: (0)	Straight pipes all the way back, no restrictions and it'll achieve that but everyone will hate you and you might get sick of it.
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07-02-2013, 09:10 PM	#3
turb0mik3 242 Rep 2,781 Posts Drives: E90 335i Racecar Join Date: Jan 2010 Location: San Diego, CA iTrader: (1) Garage List 2010 BMW 335i [8.90]	LAWL... Straight-pipes and run your tune pretty rich and vwala. But trust me, straight pipes can get VERY annoying, even when they are on a race car. __________________ HG Motorsports \| Motiv Motorsport \| Sparta Evolution \| BBS Motorsports \| Sabelt \| JRZ \| NASA ST1 SoCal --- 554whp/487wtrq --- 3200lbs <<YouTube Channel w/ Race Videos>>
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07-02-2013, 09:20 PM	#4
TheStig Captain 52 Rep 794 Posts Drives: Alot of everything. Join Date: Jan 2011 Location: Potomac MD iTrader: (4)	On my last n54, i had the following setup and it was insane! Fireballs back fires the whole 9 ARDesign 3" Catless dp's 2.75" Straight pipe back no mufflers/resornators nothing (Warning) have got tickets for this setup it was really really loud. __________________ Gone But Not forgotten: -07 Shelby GT500 W/ Full Bolt on E85 -08 335i 6MT W/ Full Bolt On E85/Meth -08 M3 DCT W/ Full Exhaust / Tune -13 B8 Audi S4 APR Stage 2+
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07-02-2013, 10:44 PM	#5
tcw Captain 52 Rep 748 Posts Drives: 2008 335i Join Date: Jan 2012 Location: Atlanta, GA iTrader: (2)	I wouldn't advise it, but disconnecting one of the coil packs should accomplish this. Edit: This might also cause that bank to run really lean. __________________ 2008 335I E92, AW, VFF700, 18" Forgestar F14, M3 front/side, M-tech rear, AMS IC, H&R Touring Cup Kit suspension, HID AE, ER Charge Pipe & Synapse BOV, CIC Retrofit, Quafie, DSS, Defiv Lockdown, SPEC 2+/Steel SMFW, Walbro 450
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07-03-2013, 05:36 AM	#7
froop Colonel 171 Rep 2,682 Posts Drives: 08 AW 6MT E82 Join Date: Jul 2012 Location: Sydney, Australia iTrader: (3)	I have AR catless DPs, CP-E straight mids and CP-E axleback. It gurgles and pops like crazy whenever I let off the throttle and though I've yet to witness it, most likely flames when NLS or 2 stepping. I have heard it backfire when using NLS but the person in the other lane I didn't know so I couldn't ask if they witnessed a flame. Someone told me I flamed when doing a burnout though. __________________ froop's AW 135i Build Thread
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07-03-2013, 10:11 AM	#8
Jeff@TopGearSolutions 3441 Rep 79,211 Posts Drives: C6 Z06, 09 335i, 10 335xi Join Date: Dec 2008 Location: www.TopGearSolutions.com iTrader: (37)	I mean yea a straight pipe exhaust helps but it's not the exhaust that produces flames. It's how your tune is running. Mainly excess fuel that is un-burnt that hits a hot exhaust causes flames.
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