how loud is Stihl 400C vs 400C with a Straight shot muffler

[@steveyork8069]

I keep hearing how much louder these mufflers are,averaged 7 decibels higher I was expecting a bigger differential.👍

[@djc84]

In person its waaaaay louder than stock, I hava 400 w this same eagan straight shot muffler, I dont like to buck logs w it, its to loud, I use it for felling or if my other saws r just to small

[@johncourt4163]

From my past experience in car audio... 3 db is 2x as loud in sound pressure reading.

[@rockyroad5035]

The decibel scale is a log scale. Every 10db in increase in measured sound level is a doubling of perceived noise. It is WAY louder.

[@Rhodesian_FAL]

@@djc84 Decibels are measured on the logarithmic scale and compound at an exponential rate. An 8 decibel increase is 80% louder than the stock muffler.

[@treestuff1358]

All my saws have a straight shot and my 400 is by far the loudest with it idk why. 500i isnt bad with it 661 isnt bad 461 isnt bad 362 not bad but my 400 is loud.

[@chadbrewer6882]

Sounds great!

[@Stihl4life]

I love them on my saws, just need hearing protection lol

[@Jonny-wn1fl]

You can see the power difference 💪

[@charleswinters7129]

Decibels are not measured on a linear scale. 10 dB difference is a lot more louder. Their is also different scales of dB. But if your getting 124 dB of sound wearing a 19 dB hearing protection device long term your chances of hearing loss is very good. Some people can work with a lot of noise and not lose a great ability to hear. Other may suffer a much larger hearing loss and much quicker.
I raced two stroke motorcycles for years and I usually am running a pro saw most weekends. I use the Stihl’s pro headset that has a 29 dB cut. I find it more comfortable. Pro level saws are loud. My Honda CR 500 I use to race made less noise. They had bigger mufflers with sound reading material inside. Sometimes they ran sound tests that you had to pass. Increasing the compression ratio of and engine will also increase the sound.
Chain saw engine are still simple low power engines for there size. They have 60 CC engines that kids race putting out over 25 horse power today. They have variable exhaust ports and reed induction. Plus a expansion chamber exhaust. It just how powerful do they want to make them.

[@jd1029]

Maybe it's just me, but seemed like it cut faster with hotter muffler

[@cocainehernandez919]

Awsome video made a big difference with that straight shot. Is it Eagan or homemade?

[@Stihl4life]

Egan straight shot

[@user-vw9ib7ec8h]

Dude! Forget the decibels, talk to me about that r model? That meaty clutch cover and wrap? I’m not seeing this anywhere! You sure that’s not a 362? Looks alot like it.

[@Stihl4life]

The wrap kit from a 362 fits the 400

[@timberandtools]

They’re loud lol but work great

[@garengtutorial8923]

👍👍👍 wow keren bos 👍