12-09-2018, 05:03 PM | #1 |
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muffler
Ordered a new muffler ((weld on) Magnaflow Performance Exhaust 14851 Race Series). Mainly wanting a different sound, hoping it's not too loud. It should also help with back pressure, yes?
Last edited by floridaorange; 12-09-2018 at 05:10 PM.. |
12-09-2018, 05:07 PM | #2 |
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Probably not. Back pressure is caused by all the components of the exhaust system, and the main factor is the pipe diameter. There would probably be a lot to gain by changing the entire exhaust if it used inch and a half diameter pipes, but it doesn't.
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rjd_F302000.50 floridaorange10258.50 |
12-09-2018, 06:38 PM | #5 |
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The general consensus is that aftermarket mufflers add no horsepower on the N20, or really F3x BMW's in general. The only place that one can reasonably add power with the exhaust is the downpipe, which you've already done. You'd be surprised how well designed the factory air paths are, including the intake. There is still yet to be an aftermarket intake that actually adds power, because the stock one is already not a point of restriction.
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12-09-2018, 08:24 PM | #6 | |
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12-09-2018, 08:40 PM | #7 |
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Im interested to see how you fit this to your car... please share exhaust photos once complete. And a video (for sound) while your at it.
Assuming the one you ordered looks like this, Im confused as to how you will make it fit? |
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12-09-2018, 08:54 PM | #8 |
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That might be a concern if naturally aspirated, but a turbo doesn't just blow air into the intake manifold, it also sucks air through the air intake. Intakes that create more intake noise can actually reduce performance, since they get their air from under the hood, which is hotter than air that's pulled from outside the car.
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12-09-2018, 09:13 PM | #9 | |
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12-09-2018, 09:15 PM | #10 |
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Yah... Not sure how easy it's gonna be to make that fit unless you want the exhaust outlet behind your tire coming out the side. I would imagine this will require at least a little bit of custom metal work.
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12-10-2018, 10:43 AM | #14 |
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Keep us updated. I'm not so sure, but we'll see...
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12-10-2018, 10:46 AM | #16 |
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lol, kinda figured as much. How did you determine that?
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12-10-2018, 11:09 AM | #17 |
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Ininitally i knew the aftermarket muffler needed a separate tip and that I couldn’t use a universal but once I saw the ECS tuning website confirm it would fit my year/model/etc I went ahead and ordered. Enough members were skeptical so I checked the sizing / 60mm exhaust outlet vs 2.25 inlet didn’t add up so called Magna in good ol Oceanside and Anthony informed me it would be best to consult directly with
a good muffler shop vs ordering one online. It was less than 24 hrs so I was able to cancel. |
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12-11-2018, 08:38 AM | #20 |
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Read through this post, it might help you:
https://f30.bimmerpost.com/forums/sh....php?t=1464771 Also, if you are trying to stay single tip, you might want a muffler more like this to replace your factory muffler: https://www.magnaflow.com/products?partNumber=12579 Last edited by CandyRedRC46; 12-11-2018 at 08:44 AM.. |
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12-11-2018, 06:43 PM | #22 | |
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^Thank you - looking over your IG!
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