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BMW 3-Series (E90 E92) Forum
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N55 backfire spit flames?
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| 02-15-2017, 01:38 AM | #1 |
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First Lieutenant
 
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N55 backfire spit flames?
Anyone know anything about our eseries n55s spitting flames? Sucks we don't have 2step but any way to see some fire?
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2020 BMW M340i
Black Kidney Grilles | M-Performance Spoiler | M-Performance Side Extension | CF Interior Trim | MHD Tuned |
| 02-15-2017, 02:15 AM | #2 |
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Is it the shoes!?
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- get catless downpipes
- get custom tune to make your car run rich - have decreased engine performance, fuel economy, and damaged exhaust components - sweet flames though, bro |
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Rob_BMW_PNW127.00 LPhiESmacks1016.50 |
| 02-15-2017, 03:08 AM | #3 |
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Captain
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Shouldn't necessarily need to run rich. Just on overrun. Isn't that what MHD/PPK burble is doing, just getting the car to spit excess fuel into the exhaust on the overrun?
On a catless car at night you might see some flames, ramp up the 'burble' intensity and maybe you'll get some race-car-like flames. |
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| 02-15-2017, 07:10 AM | #4 | |
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First Lieutenant
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Quote:
 Im catless with muffler delete I just thought there'd be something to make it happen other than MHD burbles
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| 02-15-2017, 10:17 AM | #6 | |
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First Lieutenant
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Quote:
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| 02-15-2017, 11:18 AM | #7 | |
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Lieutenant Colonel
 
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Quote:
 Love this comment. |
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| 02-15-2017, 11:45 AM | #8 | |
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Lieutenant Colonel
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Quote:
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Rob_BMW_PNW127.00 |
| 02-15-2017, 11:47 AM | #9 | |
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Captain
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Quote:
I witnessed this first hand lol
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2011 135i N55 Pure Stage 2 Turbo, Stage 2 LPFP, N54tuning.com Catless DP, Cobb Drop in, AEM Meth Kit, MHD, BMS OCC, Tuned by WedgePerformance
PI, LSD, and Dif lockdown coming soon |
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| 02-15-2017, 02:20 PM | #10 |
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Private First Class
 
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Well I'm catless and fully straight piped and I have only seen one flame. This is because I have PPK and I got the exhaust really hot by driving the car hard. This is the only way you can get a flame
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