ok guys . 462 v 461 v 044 v 441 v 661 v 056 v echo twin
2 cuts with same bar and chain which was 20" and RS stihl brand new loop. besides the echo as that had its own RM chain.
average of the 2 cuts are as follows slowest to fastest.
echo 610 31.4   muffler mod
462          19.6    stock standard
441           16.8   Mastermind ported
056          16.0    stock standard
044          15.47  gasket delete, timing, muf mod, inelt and exhuast porting
661           14.2    muff mod
461           14.15   Mastermind ported
https://youtu.be/PeG9FLed_gE
https://youtu.be/Tpr2gUqiGrI
and the bonus clip is the Stihl 090G with a chain that needs attention badly.
https://youtu.be/UkRD8jDsBcU
oh we ran Masterminds 241 and my stock but with muffler mod 241. same bar and chain which was a brand new loop RS from stihl.
my 241         22.47   Muf mod
Skips 241     17.4      Mastermind ported
https://youtu.be/fok0R_K2u7A
https://youtu.be/PkzmiKgWYlI