Muffler Mod vs. Stock: Which Makes Your Chainsaw Faster?

[@groundpounder24365]

Excellent video man..bark box made a tremendous difference in my 500i and 880.

[@Kirks_Custom_Chainsaws]

Thank you and welcome! Yes, I do not own a saw with a stock muffler.😁

[@SomeGuysSawShop]

It’s an interesting design, one of the things is that seems like ALOT of outlet for a stock saw, you put that on a ported saw and I’m sure it’ll make a pretty significant power increase, pipes are definitely fickle though and take lots of work. The ones I’ve done I’ve had to do a lot of work in cad and flow sims to get them to preform as well as they do

[@Kirks_Custom_Chainsaws]

Yes! Ported saws are my thing, so that was the reasoning as well as the test ground for building this type of muffler cover for the Stihl saws. After I port my 462, I expect this cover to accentuate the build much better than it does stock. However, I was very impressed to see how much it woke up the ms400. I run it on both of my 400’s and they are different saws with it installed!👍🏻. Thanks for the comment, stay tuned and saw safe!

[@SomeGuysSawShop]

@@Kirks_Custom_Chainsaws hell yeah man, good luck one the 462 I’m not a fan of porting them for some reason but they do port well

[@Sethhaun78]

400 is only saw I haven't bought .seems best choice fir daily tree work as I do.the 462 is my go to.but 400 is lighter not sure how much

[@Kirks_Custom_Chainsaws]

@@Sethhaun78 dry weight: 462=14.6 Lbs. 400=12.8 Lbs. you won’t regret the 400! I have one with a 28” sugi lightweight and the other is this one in the video with the 25” tsumura ultra light. I run square filed chain on both and they are amazing!!! Hope this helps, good luck & saw safe!

[@Sethhaun78]

@@Kirks_Custom_Chainsaws going to buy ported one ..one day soon.super behind with truck issues .

[@roastntoast7550]

Thanks 4 this video. Where do i get this black muffler with the side pipe from? 🤔 do u made it by yourself? Sounds good 👍 i like it! Greetings from Germany ✌️

[@Kirks_Custom_Chainsaws]

Thank you and greetings to you too!👍🏼. Yes, I make those muffler cover plates myself.

[@patrickvennard838]

I have just bought a BarkBox for my MS462, when I had an exhaust mod on my 550XP I had to re-set the autotune great video thanks for the info.

[@Kirks_Custom_Chainsaws]

Thanks Patrick! Yes, any changes to air and or fuel incoming or outgoing always require a reset.👍🏻

[@zeromark202]

Great video! Awesome info! The 5xx series Husky and Echo mufflers have alot of restriction. How do you do the custom paint on the dawgs to hold up?

[@Kirks_Custom_Chainsaws]

Thank you! I'll be dropping a video later today on the 5xx Husky muffler mods as a matter of fact 🤣👍 Stay tuned and check it out! All I do on the paint is bake each coat and put on 2 good coats of clear and bake them too. I wont say it hold up great, but it's the best way I've found without powder coating. Thanks for the comment, Saw Safe!

[@ishure8849]

G'day Kirk, I've had my 400C since they came out and It felt like a ported saw from stock something to do with that Magnesium piston perhaps market leading RPM off the shelf, I'm interested in one of your covers but I would need the mesh to keep the mud wasps out 👍.

[@Kirks_Custom_Chainsaws]

Thank you! Unfortunately, I'm not currently making these covers for production, they are still experimental at this point. They definitely wake up the ms400 when used with the RBS intake! My ms400 out of the box was a total dog, slow as heck! It wasn't until I started making mods and getting some more run time on it (breaking it in) that it started waking up. I'm very pleased with it thus far however. I have high hopes for my 462 when I get the time to port it, and finish breaking it in as well. Thanks for commenting, stay tuned and Saw Safe!

[@stannelson2582]

Is it true that muffler mods help older smaller saws more. Example 028 because they were very choked back then.

[@Kirks_Custom_Chainsaws]

That's kind of a loaded question by how old & how small?🤣 Since you referenced the 028, I will say yes. I don't personally have an 028, but other similar saws from that same era and newer, typically benefit tremendously from muffler mods. They are so choked (as you said too) that they just build heat to burn clean, but lose a lot of power in the process. I hope this helps, stay tuned to the channel and Saw Safe!

[@ciphercode2298]

Helped my ms310 quite a bit. Helps it in the cut and it definitely runs cooler

[@breadfan2938]

Just subscribed! Good video 👍 G’day from Australia

[@Kirks_Custom_Chainsaws]

Thanks for the sub! And thanks for the compliment on the video!

[@wilfreyvanderlinden9595]

Thank you for your inspiring video to improve the power of the Stihls. I run a 400 for two years now, and have recently sponteneously opened up the factory outlet 2.5 times (which is about 125% of the exhaust port I discovered!). But now I am afraid this is to big, since some people say the outlet size should maximum be about 80% of the exhaust port in order to hold some backpressure for the scavenging function, and now I will loose both torque and rpm compared to when I would have opened it a bit less, but what do you think? Can I go wrong with this outlet size or should I make it smaller? Or does the backpressure not play a (significant) role at the 400? By the way, I have runned the 400 for a second without the front muffler cover at all, and then it screames realy fast! What is the size of your tótal outlet area (from the pipe at the front + from the factory hole together) of the mod muffer in the video? And from the factory front cover with the melded pipe + the factory outlet, which you also showed in the video, to best compare it to my situation? Thank you!

[@Hankinta_Jari]

I think max hole is 80%, iven race motor.

[@Sethhaun78]

That's cool looking cover.

[@Kirks_Custom_Chainsaws]

Thank you! I’m glad you like it! I just put spray paint on top of a tub of water and dipped it.

[@pipesmcgee9270]

I've heard that for stock saws a muffler mod outer exhaust opening(s) or pipes should be somewhere around 70% in size or diameter of the exhaust port opening. Do you know if that includes the existing factory pipe along with the modded pipe, or just the added pipe mod be up to the 70% size of the exhaust port? I hope this makes sense. 16:12

[@Kirks_Custom_Chainsaws]

I’m not certain to be honest with you… I’ve always found the best performance with the discharge pipe about the same size as the exhaust port on chainsaws with factory cans. Now if you’re going to get into building a full pipe, then that’s a totally different story all together. But for the little bit of room to work with on these, I go same size. Thanks for the comment! Saw safe!

[@wilfreyvanderlinden9595]

Thank you@@Kirks_Custom_Chainsaws, just to clarify, do you mean with 'discharge pipe' the added pipe (besides the factory outlet), or the total outlet size (added pipe + factory outlet)? In other words, do you mean that you find the best performance with the total outlet area about the same size as the exhaust port, or just from the discharge/added pipe being about the same size as the exhause port?

[@sorinursu]

@@Kirks_Custom_Chainsaws

[@Super-Dave-Outdoors]

Did you do the field reset procedure after you installed the muffler covers? I think thet has something to do with the autotune saws being slower/faster depending on muffler covers.

[@Kirks_Custom_Chainsaws]

Yes I did, any changes to air and or fuel incoming or outgoing always require a reset.👍🏻. I decided not to put that in the video as it was already long enough with me rambling on😂 In hindsight, I should have mentioned it at a minimum, but I get so used to just doing the reset after every change, I forget mention in the video.

[@Sethhaun78]

Anther thing with uni west coast filters cam run them with out covers that makes big difference in flow .unless it's pouring outside

[@Kirks_Custom_Chainsaws]

Yes it does! It amazes me how restrictive a lot of stock intakes are on some really good chainsaws.

[@hanf022]

From where did you get the claw stop? Do you know if it they also fit to a Ms261cm?

[@Kirks_Custom_Chainsaws]

I'm not certain i understand; you are asking about the felling dawgs? I made them from the large felling dawgs set and yes they will fit a ms261, i also made the set that is on my 261. hope this helps👍🏻

[@IndianaDoug]

Really good info👍🏻👍🏻👍🏻

[@Kirks_Custom_Chainsaws]

Thanks Doug!

[@adamzagorsky7406]

Where’s that marbled filter cover from?

[@Kirks_Custom_Chainsaws]

It’s not film, I made that with spray paint. Much easier than I thought to be honest. Just spray paint on water, make your design and dip.👍🏻. Then clear coat afterwards and done. Hope this helps, saw safe!

[@zeromark202]

⁠Please do a video on it, I’m curious also. Looks awesome!

[@Kirks_Custom_Chainsaws]

@@zeromark202 Thank you! I'm probably going to be doing my 585 or one of the 545's soon.... maybe even my other ms400 (it's currently dyed black). I'll definitely do a video on it. Thanks again, stay tunned, and Saw Safe!

[@joshuasweet1532]

Thats an awsome pipe

[@Kirks_Custom_Chainsaws]

Thank you!

[@jjcastillo1436]

How much is it for a 310😊

[@Kirks_Custom_Chainsaws]

Unfortunately, I’m not making these for production at this time. Furthermore, the 310 has a 1-piece muffler with a deflector plate in the front, so you would have to modify your muffler on that saw. A bolt-on cover will not work in that application. Thank you for asking though, saw safe!

[@Hankinta_Jari]

Original muffler mod work even little work saw, for example 261 mtronik 😊

[@chrismuncey3861]

Nice 👍

[@Kirks_Custom_Chainsaws]

Thanks Chris!

[@davidpillow3]

The second saw you used wasn't warmed up on the first cut. The second cut the saw performed better because it was warmed up

[@Kirks_Custom_Chainsaws]

Thank you for the comment, however that is not correct. Both saws were properly warmed up and cut with off camera prior to the start of the video. The second saw (ms400) only had 0.16 seconds difference from the first cut to the second cut. And the second cut was the straight cut which is typically faster anyway. Thanks for watching and stay tuned for more!👍👍

[@Jeffrey-hi1ot]

Both of those songs are so you should have done to reset on each one of them on each muffler

[@jameslong1132]

There's a lot of bad information on you tube

[@Kirks_Custom_Chainsaws]

🤣🤣

[@jayminer9416]

You say "Stand By" alot. Not alot of guys do that.

[@Jeffrey-hi1ot]

Bet you didn't recalibrate the saws before you change the mufflers over you have to recalibrate it every time

[@Kirks_Custom_Chainsaws]

Yes I did the recalibration when I changed muffler covers. Any changes to air and or fuel incoming or outgoing always require a reset.👍🏻. I decided not to put that in the video as it was already long enough with me rambling on😂 In hindsight, I should have mentioned it at a minimum, but I get so used to just doing the reset after every change, I forget mention in the video. Regardless, the video clearly demonstrates that the modified exhaust is faster, especially on the ms400, and definitely will be much more gain on the ms462 after I port it. Thanks for commenting and stay tuned to the channel for more!

[@marstedt]

Heavy rock intro is not required. Try to keep it to a minimum please and look into balancing your audio levels.

[@Kirks_Custom_Chainsaws]

Thanks for the tip! (although I really like the hard rock intro 🤣🤣)

[@marstedt]

@@Kirks_Custom_Chainsaws - np, it's your channel. Do whatchya gotta do. ;)

[@Kirks_Custom_Chainsaws]

@@marstedt thx 👍🏻