I have high hopes!

Me too!

Yeah, I saw the mweba1 video of him step by step opening up the 4910. It was downright amazing the difference it made.

Thanks for info on 501p. I have one and will check that out

Thanks man! I appreciate it!

Thanks!

Me too!

​@@novicelumberjackso how did it go?

I did 1/2 , I think that's all you need as it leaves a little back pressure and clearly makes the saw run better and louder for sure.

I drilled mine out to 1/2” and it woke the saw up! I also modified the deflector on top of the spark arrestor. Both resulted in a much more responsive and louder saw.

I hope so. Honestly, I'm a little nervous it will be too much and not have enough back pressure.

That's the best compliment I've ever received! Thank you!

in this video, im not sure. I've had several. I think this one is just a dremmel.

We'll see. I'm gonna leave the screen in too.

@@novicelumberjack good plan!

Sounds like your carburetor is too rich, needle valve not closing all the way, diaphragm on the pump side of the carburetor not doing it's job or metering lever not adjusted properly causing needle valve 2 stay slightly open or could just need the high and or low jet adjusted properly

www.amazon.com/dp/B0852LYD7Y/ref=cm_sw_r_apan_glt_i_NR2NE9AVT6YE8S33M3YZ

Yep. Amazon. I have power going to the pedal, and from the pedal I have a dremel setup and the big rotary plugged into a multi-plug that the pedal supplies power to. I keep turning them on and off individually as needed and the pedal supplies the power.

Find me on Facebook and send in messenger. I wanna see.

We'll see. Might be too much. I'm planning on leaving the screen in.

Ahhhh...good to know. Hopefully we will see it up and running soon. See if what I did helps or not.

Yep. That would have been better for sure.

Yes except on my 620 I wasn’t able to separate the tube so I still had to cut the hole can open which sucked.

I may have just gotten lucky. I remember there being a weld on the pipe way down in there and either the weld or the pipe itself broke and allowed me to remove the whole pipe.

I have a 2022 590 and considering doing a muffler mod but curious to how much it will help it.

@@novicelumberjack you did torch the muffler before so it could have made the weld spot a weak brittle point from the extreme heat afterwards

kzfaq.info/get/bejne/fr5hpKScy9nOl6s.html

The muffler mod alone is known to make a big difference with these saws. I'll be doing a Wack-Off soon with stock vs modified.

I'll do the dye process today. Got everything REALLY clean already, just gotta dye it now. So I'll be doing that and putting it all back together today. As I'm writing this, you couldn''t know, but I also modded the carb. Limiters removed and that hole on the bottom of the high jet has been jb welded. We'll see if it'll run now that I've given it wayyyyy too much flow and taken away some of its fuel!! Hahaha 😃 😀 😄 😁 🤣 😔 😟

@@novicelumberjack be sure to let us know what your results are and if that works. Mine isn't here yet but that'll be step one if plugging it works!!

That took a lot of effort to write, so you deserve a little extra effort on my part...the vast majority of folks do not have the means to weld or braze. But, they will buy a dremmel tool. All along, I knew I would be building a pipe for this saw. Figured I should do something in between a full pipe build and a hack muffler mod first. This is a popular saw that not many people do videos on...so I'm milking it for all its worth. It is a quality mod that made a difference, but I'm not done with it yet.

@@novicelumberjack Have you started pipe builds? I'd thought them pretty sharp at 1st but honestly am now seeing almost all mufflers as being work-able (some much harder than others, of course!!) Please don't take this the wrong way but I guess I'd say I don't see how your approach differed from "the usual drill-hack"? I fully understand this is the norm, for what it's worth, but am just trying/hoping to perfect things.. Echo's design here is great for low-flow but we don't want that and, since enlarging that tube/straw is impractical, IMO it has to be abandoned....but you don't need to abandon the whole muffler by creating the exit in the rear of a 2-part can, in fact I used the hole you made - which I made initially as "my final mod", an arbitrarily sized hole there, just like Tinman, too- but eventually changed it, I used that hole **as access** to the baffle plate and enlarged the baffle holes so pass-through from rear-to-front was greatly enhanced, then I patched the entire top like literally just put a 1.25"square piece of 16g steel plating bolted down where the deflector would go :P I then drilled a pair of exit-holes on the upper-front wall (where they're out of direct-path of the exhaust port, so the flange can get maximal back-pressure....you mention trying to keep 'some', I'd argue we should be keeping as much as we can w/o compromising throughput or 'flow' and you can actually achieve quite a lot by placement of the exit, I would call the approach you show here "short-circuiting" it, basically a bypass, and worst of all the exit hole dimension is being guessed at) Am still of the belief that Tinman's issues w/ his 590 build are at least in-part because of his short-circuited muffler, sucks because echo reallllly tilts the cylinder backward so the exhaust port has a nice shot into the can, big old heat-shield, it's a great setup once "flowed" -- but almost every mod I see just throws the baby out with the bathwater, muffler pressure NEEDS to be higher than cylinder pressure to prevent excessive charge spill-out when piston's coming out of BDC and these 'open shot' mufflers whether this mod on a cs590 or an Egan/bark box on a 660 are 'short circuiting' the effect which stinks because mufflers are where real power is made/lost (as you know, if you build pipes!) Have you seen the Grunge Gasket concept by Dominant Saws? Gonna be making one to test myself hopefully today ;D

Sure do! I'm down for that! I have a couple oaks coming down in about six weeks. When that happens, I'll make a video and invite anyone who wants to come. Would love to have you over. If you wanna screw around beforehand, let me know. Friend me on Facebook. Boedy Pennington

Sure, but when your chain is nice and sharp...that's when mods like this really come alive.

Aren't you just a pocket full of sunshine! Lots of folks can't figure out why anyone would want to make modifications to saws, you are not alone in your thought process. Do what works for you man. For me...I'll take a higher performing machine that runs stronger and lasts longer. The heat build up these modern mufflers create significantly reduce the saws life. But it's all about the performance for me. It just is, and I have no need for you to agree with me.