which hatori muffler on 50 hyper?

[maxime]

which hatori should I put on my os50 hyper engine for best power(except the jason krause which is to expensive...)?

I saw one fly today at the field, and was very quiet, smooth running, and still a lot of power in comparison with my mp2(which doesn't have consistent noise but wider power range/band in different rpm's). the hatori does haver a smaller band where it has it's top power I've heard.



so there's the hatori 50-HNS3D number 522, then there's number 544, or the 546

or would you really recommend another muffler for the hyper on 15% wildcat for 3d(like the zimmerman which is also pretty quiet)?

thanks a lot

[BarracudaHockey]

SB50 or MP2
The MP2 has the narrow tuning band.