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#Post#: 91635--------------------------------------------------
Echo air filter testing 490 500 4910 501
By: Chainsawrepair Date: September 13, 2025, 8:03 am
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Just going to do some real testing for myself. Seen Joe H. Joe
Dyno do this on one of his saws.
I just cant stand the humpback look of the afm wedge deal and
the 3d printed set up. Joe tested this on a stock echo and it
only showed 3% on stock one over the stock air filter. But
guys are saying they are seeing 10% on their ported ones. Going
by cut times.
I'm not doing this because of fines getting by oem filter.
Because I dont have a issue with that since installing a o-ring
over 2 years ago.
I am going to test with cover on oem filter, then with cover off
oem filter, then with the other oem echo set up installed. Just
a good running hack ported 490 to be tested on.
All my 501 are kept stock. Maybe try one of those later on.
#Post#: 91637--------------------------------------------------
Re: Echo air filter testing 490 500 4910 501
By: Chainsawrepair Date: September 13, 2025, 8:33 am
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Joe's
#Post#: 91643--------------------------------------------------
Re: Echo air filter testing 490 500 4910 501
By: Chainsawrepair Date: September 17, 2025, 10:49 am
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IMHO if you dont have a issues with fines on stock air filter
running the o-ring like I do. Not worth it to me.
Echo 490 that I took on trade years ago. It was hack ported no
squish or base cut. Running stock air filter with oring.
Then running echo parts Joe showed using years back.
Total cost $30 shipped to me for the 3 oem echo parts.
I don’t have issues with fines for over 2 years now just by
running the o-ring in stock
#Post#: 91644--------------------------------------------------
Re: Echo air filter testing 490 500 4910 501
By: Chainsawrepair Date: September 17, 2025, 11:03 am
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23RS touched up. About half way back
Running my hand down the cut.
Only thing make a smoother cut imo is stoning chain.
Not needed for work saws or chains.
#Post#: 91647--------------------------------------------------
Re: Echo air filter testing 490 500 4910 501
By: Cut4fun Date: September 19, 2025, 6:45 am
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Retuned for next try. Noticed it had picked up rpm's before last
test session with switch. The 490 500 dont like higher rpm's the
way 501 4910 can compared to those.
Just trying the $30 set up for fun on my 490.
Might try on one of my higher revving 501’s later.
I ended up fattening it up a 1/4 turn on H side to bring it down
some.
10.75 Down, 11 across. Was 1/4"+ down cut shorter then test day
before.
But did get both on video.
Joe's dyno run to show what I am talking about.
#Post#: 91648--------------------------------------------------
Re: Echo air filter testing 490 500 4910 501
By: Chainsawrepair Date: September 20, 2025, 8:43 am
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Video's
The stock set up was 11" down 11 across.
With the other echo set. I ended up fattening it up a 1/4 turn
on H side to bring it down some.
10.75" Down, 11 across
HTML https://youtu.be/slzWcFbBUks
HTML https://youtu.be/ysMGUpoXP9c
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