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01-26-2018, 09:55 AM | #1 |
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Increasing Induction Noise...
Does anyone have any ideas on increasing induction noise on our cars?
N/A and F/I owners are free to talk about tricks you've used, or ones you've heard about. What I've Done: After getting some more doo-WAAAAH from my Mishimoto silicone intake boot, I want even MORE!!! I have a K&N Drop-In with a Charcoal delete, those didn't make that noticeable a difference. What I'm Considering: I read on some forum (E90 Post, I think...I barely survived) that putting spacers in between the two halves of the intake box, to create about a 1cm gap is a really easy way to get a ton. One guy removed the non-filter side of the box completely, and said it was deafening (that's what I think I want, but I probably don't). Nice thing about both of these solutions is that they're easy to do, and easily reversed if you don't like it. Another thing is a CAI with an open cone filter, but people are torn on the benefits/detriments of this (heatsoak issues, mainly)...
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01-26-2018, 04:36 PM | #2 |
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I've heard that running the BMS cowl filters or removing your cowl will give you quite a bit more
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01-26-2018, 08:00 PM | #3 |
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I just removed the snorkel side half of the stock intake box (snorkel = box on top of radiator) and ran with just the MAF side with my K&N filter.
It was ridiculous; completely and totally ridiculous. It was subtle and soft at normal speeds, but then, when I got on it, or hit around 3k, it just howled like an S54 with velocity stacks! It's insane, and is a little more than what I wanted. I'll be adding spacers between the two halves and reinstalling to quiet it down, or possibly drilling holes in the sides of the box that aren't facing the engine, to reduce IATs.
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01-26-2018, 11:32 PM | #4 |
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The best thing you can do for induction noise on 128 I is pick up a used AFE intake. Or DIY some extra holes on your box. It will bring you glorious induction noise.
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01-27-2018, 12:51 AM | #5 |
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01-27-2018, 09:03 PM | #6 |
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After one day without one half of the air box, I have a splitting headache. I'll be reinstalling that half of the box, albeit with some holes. I don't want to sacrifice all of this noise, just the annoying majority of it.
It sounds epic at full tilt, at around 4k+ the kickover from VANOS is insane. Forget VTEC, yo! But that epic sound is overwhelming my poor ears...
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01-28-2018, 01:14 PM | #7 |
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Seriously people are choosing more noise over performance - why? Removing the snorkel is putting hotter air into your intake. Can anyone post dyno numbers showing a real increase over stock intake?
Or if noise is what you want just go vroom vroom when you step on the gas.
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01-29-2018, 06:24 AM | #8 | |
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It seriously feels like the response is 5x better, and that the power is more linear, with better low end pull. I feel absolutely no performance loss, at all, but dat noise, though! I still need to quiet it down, though...
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01-29-2018, 06:41 AM | #9 | |
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01-29-2018, 08:07 AM | #10 | ||
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As for increasing induction noises I got rid of the cowl myself and run the BMS cabin air filters. I can hear EVERYTHING through them. The turbo sounds are awesome and I highly recommend it. I'm still on the stock airbox as well.
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01-29-2018, 03:00 PM | #11 | |
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Besides, I don't want to spend $400 on an intake which few people actually buy, and likely won't get the effect I want, which is an other-worldly sound, as close as possible as the E46 M3 CSL. If you don't like being associated with so-called impoverished, cheap-a$$ crap humans like me (your words), go put $50k on a new car that won't be half as fun and engaging to drive... Haters gonna hate, but I'm gonna enjoy my car regardless!
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01-29-2018, 03:03 PM | #12 | |
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I just looked at the cowl filters, they look pretty reasonable at $59, especailly considering the benefits you describe. Also, I really like the idea of easier access to the back of the engine, and all the various stuff back there.
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01-29-2018, 03:32 PM | #13 |
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I reinstalled the other half of the air box, with about an inch worth of space between the two halves. Gave it a few revs, it retained a nice quality sound, but (thankfully) gave up some of the resonance and boominess of the halved box.
I also took the liberty to find a better retaining system for the air filter, and covered the engine side parts of the upper intake tract with foil tape to reflect any extra heat away from the system. I left the rest black, because the black should radiated the heat already in the system out. I need to finish my shifter rebuild and SSK install before taking the car on a proper test drive. I would've been done last night, but something went very, very wrong on the assembly (snapped the shift arm) and now I'm waiting for the new parts.
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01-29-2018, 03:37 PM | #14 |
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A popular mod for E86 N52 Z4's was removing two foam pieces from a thing called sound generator, which is a pipe running from the intake to the firewall. N52 1 Series have also a similar thing installed, but haven't seen that many people modifying it.
Look up Z4 sound generator on youtube. Number 10 in this diagram: http://www.realoem.com/bmw/enUS/show...diagId=13_1165 Edit: 135i also have a sound generator, according to ETK. Dang. Someone be the guinea pig, pls. https://www.ecstuning.com/b-genuine-...r/13717575658/
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Last edited by swagon; 01-29-2018 at 03:43 PM.. |
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01-29-2018, 03:50 PM | #15 |
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My car didn't have this attached to the stock intake boot. Unfortunate thing, too; I drove a Z4 3.0i (N52 with Sound Generator) and I liked the sound it made. I'm sure my Mishimoto Silicone Intake Boot is louder and more natural, though.
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01-29-2018, 04:22 PM | #16 | |
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01-29-2018, 05:04 PM | #17 |
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Gotcha. Thank you!
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01-29-2018, 09:58 PM | #18 | |
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https://jalopnik.com/5973177/this-is...-by-a-computer Anyone know if 1ers have the "symposer"? A quick google search shows the 2 series has it, and it changes depending on what mode the car is in, i.e. Sport mode is louder. I didn't realize we had a mechanical piece piping sounds into the cabin, also. I can't find it right now, but I saw a video where someone replaced the sound file with a Lamborghini sound in a more pedestrian car. Pretty funny. |
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01-30-2018, 02:49 AM | #19 | ||
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http://www.1addicts.com/forums/showthread.php?t=741784
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02-01-2018, 09:40 AM | #20 | ||
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02-01-2018, 11:11 AM | #21 |
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Get an AFE intake. I have this with the dry filter. It sounds great and definitely is a no compromise solution. That's why it's not cheap.
https://afepower.com/afe-power-54-81...-intake-system
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02-01-2018, 04:41 PM | #22 |
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Shot a video on a drive this afternoon, the wind noise is terrible, but the engine note pops through when I get on it.
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