400.1 first impression

[lehman live edge slab]

Does the ms 400.1 still blow or is it ok now ?

Worse yet it sucks and blows, sucks in fuel and blows out exhaust.

 

[Duane(Pa)]

What blows is that they’re not here in the USA to be “bought’n”

 

[drf256]

Have you ever seen the exhaust outlet on a Stihl 260? It’s about the diameter of a pencil… I think restrictions are their go-to for reducing noise and emissions.

They’ve clearly been doing some work with acoustics.

Most of the newer Stihls have baffles the twist the exhaust after it exits the cylinder. When there wasn’t enough room to accomplish their goal, they started the twist in the exhaust port (462).

The noise canceling effects of colliding acoustic waves are being taken advantage of. Most of the newer mufflers place the outlet as far back in the can as possible. They are also flowing more and making less decibels.