08-04-2021, 02:25 PM | #1 |
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Make N55 Exhaust Louder
I have a F30 with a N55 engine. I put a valvetronic axle-back valved exhaust on the car which created the sound I wanted but it is still quieter than I want.
To increase the volume, I am thinking about either adding a catless downpipe or doing a resonator delete but I am curious to hear other people's experience and if there are any other solutions before doing so. *I am looking for a loud burbled exhaust sound* |
08-04-2021, 02:26 PM | #2 | |
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Catless would yield performance gains and likely nail the sound you want, it would suck to delete resonator, get the sound you want, to later go catless for performance and it becomes too loud. |
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08-04-2021, 02:32 PM | #3 |
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The Valvetronic exhaust is garbage. I had that with a catless downpipe & resonator delete and I took it off the car after a week. My armytrix exhaust was much louder. Since then I have gone to a VRSF and SSS2 midpipe. The car is sinister loud now.
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08-04-2021, 02:36 PM | #4 | |
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08-04-2021, 02:37 PM | #5 |
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I love that it was someone other than me that said this.
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2017 m240i xDrive 10.99@122.86mph bootmod3 stage 2+ ots
2015 335i xDrive 10.95@124.99mph w/bm3 - SOLD 2015 X3 x35i pwg 12.96 catless w/bm3 stage 2 93 ots IG: @n55david For pics and updates! Youtube: @ n55david For videos or Racing etc |
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08-04-2021, 02:50 PM | #6 | |
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Yep. it just was not loud.
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08-04-2021, 04:48 PM | #7 |
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If you want loud inside and out: Catless + muffler delete. Can't get any louder than that.
If you want noticibly louder INSIDE the cabin, but not obnoxiously loud outside the car: any catted downpipe + almost any muffled axleback. The Loudest of the axlebacks is the AWE track. Then everything else is subjective. I am running a Remus valved axleback and a circuitwerks catted downpipe. It is perfect imo. Even got some comments about how good it sounds from folks who I would not consider "car people" in any sense of the word. Interpret that how you will.
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08-05-2021, 10:17 AM | #8 | |
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Adding a downpipe will improve the sound for sure. Catless is louder and raspier, catted has a deeper mid-range tone.
In my opinion, catted is the better option, but either one will do the Job Quote:
catted + REMUS is the best sounding exhaust Catted + Active is a close second
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08-05-2021, 11:15 PM | #9 |
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I love the catless downpipe setup with stock rear exhaust. It's just the right amount of aggression, loudness and tone Imo. If you decide to go catless we have a really nice option for your vehicle.
Shoot us a pm if you have any questions.
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08-07-2021, 07:39 PM | #11 |
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https://streamable.com/4z6r0f
MPE with resonator delete, the a few seconds later the aftermarket valve opens which bypasses the MPE backbox. This used to be my favourite overall tone, it was loud deep and not overly raspy. I needed performance gains though so went catless. I then had the MPE modified so that I could the aftermarket valve behind the resonator and a second pipe straight into the tailpipes, that way I can have MPE + catless downpipes as a quite mode, then when I open the aftermarket valve it goes full hell turbo back straight pipe. https://streamable.com/idb1rb The full straight pipe version (current setup) reminds me a lot of an equal lengths F80/F82 sound.
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08-08-2021, 08:02 AM | #12 | |
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interesting though.
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2017 m240i xDrive 10.99@122.86mph bootmod3 stage 2+ ots
2015 335i xDrive 10.95@124.99mph w/bm3 - SOLD 2015 X3 x35i pwg 12.96 catless w/bm3 stage 2 93 ots IG: @n55david For pics and updates! Youtube: @ n55david For videos or Racing etc |
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08-08-2021, 10:07 AM | #13 | |
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I built the system with a race exhaust engineer, I had just one rule being zero disruption to existing power.
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2015 435i - 401whp
Scorpion catless dp, VRSF 6.5" HD FMIC, MST V2 inlet, NGK 97506, MHD Stage 2+ 102, xHP Stage 3, M Performance Exhaust (modified for valved straight thru) |
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08-08-2021, 10:23 AM | #14 | ||
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2017 m240i xDrive 10.99@122.86mph bootmod3 stage 2+ ots
2015 335i xDrive 10.95@124.99mph w/bm3 - SOLD 2015 X3 x35i pwg 12.96 catless w/bm3 stage 2 93 ots IG: @n55david For pics and updates! Youtube: @ n55david For videos or Racing etc |
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