muffler mod

Hey guys, I'm wanting to put a side exhaust port on my 372 muffler instead of the top port... tired of it burning my hand when I've got the bar buried bucking big logs. What size should the exhaust port be? Not really looking to get max power, but a performance boost would not be unwelcome...

I’ve been tinkering with my 025 stihl I got for free locked up. I let it sit for a few weeks with deep creep in it and it unlocked. Anyways, it’s ran great for the last 2 years. I’ve started modding the muffler heavily, I’m wondering if it’s to much for this saw. It runs sweet and makes a ton of...

Muffler mod

So a complete newbie, but trying to be creative with what i have on hand. Its a copper pipe with a pretty snug fit, and i glued it up with some steel epoxy glue thats supposed to handle heat up to 150 Celsius. I know its not pretty but do u think this should hold? It feels solid

Hello everyone, i'm putting back together a seized MY 2013 Husky 550xp. It deens like it ran with bad or insufficient oil, exhaust side of the piston is quite damaged. Anyway, I'm worried about what people says about this saw: it runs ALWAYS a bit too much lean, it overheates (maybe due to the...

Anyone have good details or instructions on how to remove the tube/deflector in the 620 muffler? would like to open it up some and that looks like a good place to start. What tools and methods worked best or well when doing do?

My 460 is showing a bit of rust on the stock muffler. I figure if I replace it, I might as well upgrade it. I've never done anything but run fuel & oil through this saw. Totally bone stock. It is about a 12 year old saw now (I think. close enough) The mod that always pops up is "dual port...

Just bought a new Makita 7900 PHO for $731 shipped and was wondering if anyone makes any ready-made modded mufflers? I'm a little concerned about splitting the muffler and gutting/modding it, since I don't have a backup in case I screw up. And, if you haven't looked, OEM mufflers aren't cheap.

Hey friends, couple questions regarding the mentioned saw. Can i upgrade it to .325 ? How well does this saw respond to a muffler mod? I would most likely enlarge the existing outlet but not quite sure how much. What would be the meanest chain for that saw in 3/8 lp pitch? At some point this...

FS a very good condition 2001 model Husqvarna 395xp PHO with mild port work and muffler mod. All OEM except muffler, Meteor piston, and Caber rings. OEM full wrap with West Coast kit and front case protector. $750 Shipped PayPal F&F to those in EST, CST, MST. If in PST or outside the continental...

looking for a modded muffler for my stock 390xp. the saw has absolutely nothing done to it and i'm really not looking to open it up, but i would like to get whatever small gains are available by going to a modded muffler done by one of you fellas who have done this for years and knows what your...

Finally decided to tackle the little echo saw. I really didn’t think much of the saw stock. Slow chain speed, wrong bar and chain setup when stock. Chattering was an issue. It worked fine for cutting small limbs when up in a tree but that’s about it. Here’s the muffler part There really isn’t...

Picked up an 015 from my dad, he couldn't remember the history on it. Took it home, fueled it and no start, looked like no spark so I read, found and did the points to electronic conversion. Cleaned the air filter and threw a new plug in it also. Saw started on 5th or 7th pull and ran, cut...

Hi All, A newb question on modding a muffler on an MS390... I've had the saw for while now and done a fair amount of cutting with it but could always use more power :) I've been reading some of the other posts about the muffler mods and want to give it a crack, but was thinking to buy an...

If you ain't done it already, do it. All I did was gill the side, four 3cm long cuts and opened them up. Hory sheet what a difference. Can't imagine what this thing would be like with a base gasket delete and a popup...

What you think about my stihl 026?

Howdy, Been a little while so I thought I would post today's shop fun. My trusty little Echo CS-341 was in need of some spring maintenance so I took the opportunity to upgrade the muffler. This saw came with a catalyst muffler which always has seemed restrictive. Turns out the CS-3400 saw...

Not much of a thread but I am looking to mod my 044 muffler it has the divider with the 3 big holes, does it go to pry that out or does one need to cut it out? Also, behind the divider is a metal box with smaller holes surrounding the inlet to the muffler. Is it best to cut that out completely...

I have a Stihl 029 Super that I bought new approximately 15 years ago. I have cut A LOT of wood with this saw. I've never cut the saw any slack. I've been threatening to do a muffler mod on it for a few years now and today I finally got around to doing it. I removed the limiters on the carb so...

Guys, I've searched and found so many different versions of modding MS290 mufflers that I gave up on trying to figure out who was right. Some have opened up every restriction so much that there could not possibly be any back pressure and some haven't while all report "runs better than ever"...