There is no unsprung weight in the balancer assembly.
Can you explain by what you mean? Are you saying that the BS does not cause any resistance on the motor or that I did not explain it correctly and I should have said that the BS adds unsprung weight/resistance on the motor?
I won't be removing the balance shafts. More often than not people are report extra vibrations with little or no tangible gain. Also to reinstall them you have to have sprockets in the correct clock, and the piston TDC and other technical things that just aren't worth it. Plus I have a sport suspension, which most people who report undesirable vibes also have. Not to mention after I install my RMM it would probably be was too much vibrating.
Motor mounts I strongly agree will transfer more vibrations. But I highly doubt springs, coil overs or sway bars will have any affect on what the motor transfers in cabin. Were these claims from MZR owners or cx-5/skyactiv g owners?
If its do-able, have you considered converting and tuning the car to speed density ? So that the MAF is deleted and you use just the MAP and oxygen sensor for normal driving and then just the MAP for Wide open throttle or aggressive accelerations.. If our car (CX-5) does not have Intake air temperature sensor then maybe use the Fuel temp sensor instead (if we have one)...
On the EVO when i converted to Speed Density we did not have intake air temperature sensor in the intercooler piping. Some people customized to install and use an aftermarket one. But I and many others with the Tephra V7 tuned the car to use the Fuel Temp sensor which worked just as good.