MST Intake B48 No sound?

samclarke10 · 05-30-2022, 11:26 AM

Hi, I recently installed the B48 MST air intake on my 2017 BMW 430i and upon load their is a good bit of sound difference but in park there is no sound difference at all from stock? Any ideas

freakystyly · 05-30-2022, 11:34 AM

Why would there be any more noise in park (I'm assuming with the engine idle)?

https://www.enginelabs.com/news/vide...ngine-consume/

Engines flow very little air at idle compared to higher rpms.

samclarke10 · 05-30-2022, 11:38 AM

Quote:

Originally Posted by freakystyly

Why would there be any more noise in park (I'm assuming with the engine idle)?

https://www.enginelabs.com/news/vide...ngine-consume/

Engines flow very little air at idle compared to higher rpms.

As in revving it in park or in neutral there is no sound difference compared to the. 5:40 https://youtu.be/Hx9fvucV34w here

Wires · 05-30-2022, 12:16 PM

There is no load on the engine, so you are expecting too much during that point. The noise you hear is the when the engine is loaded down at high compression (high throttle openings).

If you had that same noise at idle/park reving it, you're mileage would be 25 L/ 100km on the highway.

05-30-2022, 11:26 AM	#1
samclarke10 New Member 0 Rep 6 Posts Drives: 2017 BMW 430i F36 Join Date: Mar 2022 Location: Dublin, Ireland iTrader: (0)	MST Intake B48 No sound? Hi, I recently installed the B48 MST air intake on my 2017 BMW 430i and upon load their is a good bit of sound difference but in park there is no sound difference at all from stock? Any ideas
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05-30-2022, 11:34 AM	#2
freakystyly Lieutenant Colonel 3008 Rep 1,798 Posts Drives: F22 B58 6MT Join Date: May 2016 Location: Ontario iTrader: (0)	Why would there be any more noise in park (I'm assuming with the engine idle)? https://www.enginelabs.com/news/vide...ngine-consume/ Engines flow very little air at idle compared to higher rpms.
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05-30-2022, 12:16 PM	#4
Wires Brigadier General 1646 Rep 4,877 Posts Drives: 2016 340i xDrive Join Date: Apr 2008 Location: Calgary iTrader: (0)	There is no load on the engine, so you are expecting too much during that point. The noise you hear is the when the engine is loaded down at high compression (high throttle openings). If you had that same noise at idle/park reving it, you're mileage would be 25 L/ 100km on the highway.
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