Decided to try a muffler mod

[pyroholic]

So i was bored and have a budding case of CAD. After looking at the saws for a minute I decided I was ready to try a MM on the 290. Took about an hour, including tuning, and WOW!! what a difference. Really, really woke that saw up and it sounds sweet.

 

[pyroholic]

Opened both slots a little and added about a 3/8" x 9/16" oval in the dimple. Opened the deflector a little too. Ended up at 1-1/2 out on H and 3/4 on the L. Runs great!

Saw is only 8 months old so there goes the warranty. Oh well, prov probably wouldn't need it anyway.

 

[ScotO]

Opened both slots a little and added about a 3/8" x 9/16" oval in the dimple. Opened the deflector a little too. Ended up at 1-1/2 out on H and 3/4 on the L. Runs great!

I'm betting it sounds great, too! My favorite part of the muffler mod!!

 

[pyroholic]

I'm betting it sounds great, too! My favorite part of the muffler mod!!

Oh yeah!

 

[DexterDay]

Big fan of the MM. Look over on AS and some people are going around or over 100% of the original outlet. With some going much bigger

Looks great... Prob sounds great too

 

[pyroholic]

Master Mech's carb tuning 101 video was very helpful. Helped ease the stress of tuning to be able to see a pro in action.

 

[clemsonfor]

Warrenty not gone. Just don't admit it If u have a problem u will need to buy a stihl muffler off eBay and install it then take in for work.

 

[pyroholic]

Warrenty not gone. Just don't admit it If u have a problem u will need to buy a stihl muffler off eBay and install it then take in for work.

Oh don't worry, I had thought of that. Doubt I'll need it, cut 10 cord so far with 0 issues. I would think that a decent quality saw would break by now if it had a defect. I treat it well, with HP ultra oil, premium gas and ethanol shield and run a touch rich (44:1) to be exact. I also have 6 saws now of which 5 are usable so that helps spread out the wear a bit.

 

[clemsonfor]

Yes don't think u will need it. More likely for something to happen with them as lean as they come and breathing through a straw.