In my opinion!!

[stunks]

In my opinion I think the OS 91hz runs better than the OS 91hzr and 91hzPs, my OS91hz runs so sweet and performs so well from the very first day, am not saying the others don't run well but for me the HZ is better. For some reason my HZ Ps and HZR sounds different and sometimes seems like its missing or maybe it's just me!! What do u think have u have both engines?


Johnshrinks