More power after BREAK-IN?? Stihl Ms400! Foam filter test!! 

The best channel on RU-vid for chainsaws

Your channel is refreshing. Millions of people go and buy chain saws. A few hundred are trying to break records. The 2 and 5% gains you show keeps it real. We aren’t at Bonneville. Thanks.

Great testing Joe! "One Test is Better Than One Million Opinions"

I'd love to see a Bark Box run on that 400 with and without the air filter.

Thanks for explaining your process, very thorough.

I appreciate you explaining the dyno runs. I figured you were at the very least warming the saws up 😁

Great content Joe. I run a red beard saws filter on my 390xp along with his velocity stack. Keep up the great work!

Should have ran the red beard filter without the top cover. Be interesting to see what it did that way. I'd like to see what my 462 does now compared to stock. Base gasket delete, home brew muffler mod, wcs filter hanging out of the cover. I ran it with the wcs filter before I cut the cover and after I cut it it felt stronger. Sucker pulls some air for sure. And it's cooler air now instead of breathing hot air under the cover. Enjoying the content, keep it coming.

Great explanation of the dyno, Mr. J. - Automotive dyno runs are similar - many runs, tabulating and averaging out data, making adjustments, etc.

Awesome and very interesting videos! All the best!

Solid work. Not based on “it feels faster”. But real world data. Thanks for posting these videos

Joe you are 1 great saw tester compleat and leave no stone unturned and are straight as an arrow doing your testing as good or better than factory ratings keep up you honest and dead game tests

Thank you for the video drop. Alway make time to watch a dyno joe video. 😎👍

Good explanation! Definitely gains all around, especially after break in.

RBS air filter setup rocks! Good job to both of you!

You are doing a great job, and if anyone wants to bitch or complain, they can go attempt to do better. Thank you for sharing your videos, and doing your best to show us what you are figuring out with your experiments, for free! You should charge a fee for this information, but you don’t. Most of us really appreciate that!!

Thanx!

Thank s

Finally a 400 ! Great video . Can't wait to see the 400 smash the 60 cc class test. I love mine.

Very cool

Husqvarna 543xpg was really a dog before it broke in. After break in time it was totally different saw and actually nice one😊

Very interesting.

Awesome video Subscribed sir! God Bless ya!

Nice to know that the filters really add power! Have a rbs filter and stack for my 390 just a pain to remove the oem intake with those rubber nobs in the bottom 😂😂🤦‍♂️👍

your best video yet.

Nice job appreciate your effort.

Would love to see a broke in 400c vs a ms 440. They are both advertised as a 5.4 Hp saw be interesting to see the real world difference

Thanks for sharing buddy! That clears up some questions! 👍👍👍👍🇺🇸🇺🇸🇺🇸🇺🇸🙏🙏🙏🙏

Would be cool to see long Dyno runs

Interesting

Nice !

Man thanks Joe for this video.. I absolutely love the 400c. I had Buxton port it and I run the RedBeard filter on it (both awesome guys). The saw is so much fun to run. I’m sure you’ve seen the vids I’ve posted of it on FB. Also thank you for showing a “ Broke in” saw compared to new as well because I’ve always wondered if a saw was any stronger after break in. I know when my 400 broke in it was like a light switch got flicked on. It was instant it seemed even my ground man heard it change. Anyways thanks for the fantastic content as usual.

WCS and RBS foam filters are hands down better than the factory junk paper filters that come on these saws

“Oh sweet, a new Dyno Joe video!”… work productivity drops 98%. Enjoying the consistently good content Joe, really interesting 👍🏻

Great video 👍

Keep up the good work thanks for spending the time in the R&D and all the expense it's not cheap I'm hoping you guys are making a little money from RU-vid really like your machine work be great to see some more machine work?

sthSTHIL is really good mate 👍👍

👍👍👍

👍🏻

I like them filters. They arnt a huge gain but I've noticed my saw runs cooler after buckin 3 cord compared to stock filter. Easy and only $40.

Please check the power of the most common household models, such as Husqvarna 236 and Stihl MS-180 (Classic versions without 2-mix/X-torq) It has always been strange to me how a small 32cc engine like the MS-180 realizes 1.4kW of power.

Nice one Joe. Did you run the broken in saw with the Red Beard filter? It would be cool to see the potential on it.

I always wondered how much that magnesium piston costs.

Excellent job and video. I’m really interested in the 400. Been trying to make up my mind between a 361 and 400.

I love seeing real results rather than just claims. I was watching a video earlier where someone wasn't a fan of you testing the turbo crank. I reckon if it works and you're claiming that it works then you should have no fear of it being tested and the results shown. If you're selling a mod with claims and they are shown to be ineffective then maybe don't do the mods. I personally would like to have a play at porting 1 or more of my saws just for shits and giggles but prior to doing that I would seriously consider making up a dyno rig.

Can you perhaps make a dnyo test on a modified/advanced ignition timing saw? Would be interesting to see effects on engine performance, since it's rather easy to do.

Thanks for the video. The foam air filter is not worth it for me, and I certainly do not want to listen to a bark box when I am using my saw.

Broke in saw plus new air filter?

Did you ever end up porting this 400?

Great video as usual Joe. I need to get a reschedule date for my 400c. I have 1 suggestion and 1 question 1. As free advertising you should paint the bar on your dyno stand and add your business logo to it. It spends so much time in the video 2. As they since they are 2 of the exact same model why not pick the actual peak power peak about 100 or 200 rpm lower?

Truly enjoy the results of all your efforts Dyno Joe , I wonder if there is any way we could see you attach a troll to that dyno and then see if porting said troll and really polishing his exhaust helps any ? Hahahaha

The one "lean run" that was down on power at the high speed, WAS higher at 10300 rpm than the rest. Do you think this is significant and should be explored? Keep up the excellent work you are doing.

Could you do a dyno comparison on minor mods? For example, I drilled holes in the muffler of my MS290 and removed the carb. adjustment limiters to richen it up. It seems to have 2 or 3 % more power.. Thanks

Thanks for doing the 400 video. Really curious how the 400 stacks up to a 362 abc 462 on the dyno.

How can you tell you’ve arrived as “RU-vid Royalty”? Haters! Haha. Joe, keep up the great work. As always , it’s great to see a methodical approach backed with no BS results. Now I’m off to the Stihl dealer to see if I can’t find a 400….

What state are you located in Joe? Is it hard getting saws back and forth from Canada?

The used stock saw gives 5% more HP (6.24 vs 5.94) over the unused stock saw.....but if we compare the dyno for the unused stock MS 400 (taken from the "MS400 vs MS 044" video) it is only 5.63hp...which makes it a whopping 11% gain just by breaking it in. Can these numbers be compared from one dyno run to another? Or can there be that much difference in two different units coming from the factory? Would really appreciate your take on this, Joe.

That 400 is strong

Was the used 400 with a stock filter?

How does the ms400 compare to a muffler modded echo cs590?

Hey, how about a test between Holzfforma and the saw that they copy, Stihl or Husqvarna!

You are well north of Hp ala Stihl's claimed power. Is that because of your equipment?

There is not much difference in new and broken in. My 261 really woke up at the 5th tank. Some saws I might see a slight improvement. Most of the time there is not a noticeable difference.

I want a 400 so bad

Absolutely hate Stihl saws. My old HomeLite 770 with the 36 inch bar is my go to. These plastic saws feel chinsy and week.

What's the Jcs stuff all about? I see him bitching you copied him. I've watched most of your vids never once thought you did. Only maybe the shavings in the case one, which I thought did him more favours as it disproves the person bitching on his channel about it, as does little damage really with alloy fillings🤷‍♂️. Is he just doing it to gain hype and subs?.. honest tho I can never tell if he's being serious😂. I like both channels. Though the nitro stuff is fun, it's just not practical for work use. Maybe the dyno is causing some jealousy in the saw world over the pond😂🤷‍♂️

So you’re the guy that rips everyone’s ideas off.