06-06-2018, 02:07 PM | #1 |
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Unusually loud backfires, pops, and gurgles
Hello N55ers. Not a frequent occurrence but has occurred more than once for me to notice.
Been getting unusually loud crackles and burbles from my car. Currently running catless and JB4 (map 1). My questions are: Is anyone with same/similar mods experiencing this? Does this have to do with JB4 perhaps giving wrong signals (too much fuel?)? Any ideas or comments?
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2016 F23 AW M235xi
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06-06-2018, 02:19 PM | #3 | |
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Sounds beastly. Almost wish it was always that loud, but I'm wondering if somehow the car is running too rich on those rare occasions.
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2016 F23 AW M235xi
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06-06-2018, 03:11 PM | #4 | |
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If I manually downshift like 5-7 minutes after the car started I'd get a couple loud pops, but then it would be warmed up after that. |
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06-06-2018, 04:10 PM | #5 |
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Drives: 13 GT50014 AW M235i(sold)
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I downshift when I’m coming up to a light and keep the rpms above 5k until I get to 2nd and then I’ll let it drop below 5’amd around 4500 I’ll give a tiny blip and I’ll get gunshots. Best way to start the day.
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06-22-2018, 07:53 AM | #6 | |
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Do you have fuel smell on idle and when on light cruise? |
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06-23-2018, 01:46 AM | #7 |
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This doesnt sound abnormal to me, I am full straight pipe and it has insane burbles always but every once in a while maybe once a month I will get a super loud one that sounds gun shot-ish
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06-23-2018, 03:21 PM | #8 |
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If you blip the throttle while decelerating and burbling, you'll get the loud backfires..
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06-26-2018, 08:20 AM | #9 |
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To chime in on the other comments, I've found that my car will make gunshot noises if I'm engine braking down a hill between 2.5/4k rpm and tap the throttle. Once or twice these pops have been so shockingly loud I could feel it in my chest.
I'm all stock except for a straight axle back post resonator. |
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06-26-2018, 10:17 AM | #10 |
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If you drive in Sport Mode with the shifter to the left in manual mode, you will get a lot more burble and noise in general, mine with resonator delete and MPE can really produce some lovely sounds when driving in this mode.
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06-26-2018, 03:12 PM | #11 |
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In sport mode, usually when warming up or on cold days, I would also get loud burbles and pops; but always at lower rpms, but also goes away after warmup.
I do have the MPE tho.
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BMW F22 M235i M Performance
VMR 18" V710 Staggered | M Performance Exhaust | M Performance Splitter | M Performance Diffuser | M Performance Grille | M Performance CF Interior | CF Mirror Caps | CF Trunk Lip | 35% Ceramic Tint |
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