Those that have deleted their balance shafts. Does it affect idle quality much? Would adding a shock mount like this http://www.andysautosport.com/honda/...i00204706.html

help with vibration?

 

That's a torque damper and would make it worse if anything. The torque damper is designed to allow less engine movement under acceleration. It acts as a stiffener directly between the block and the chassis, thereby also transmitting vibrations directly to the chassis as well.

 

balance shaft delete
75a or higher mounts (even filled mounts)
engine stiffener like the one you posted or the one on ESP bars

Will all create more vibration in the cabin. There's really nothing you can do about it since the factory components are there to ease this vibration and make for a smoother ride. Removing/swapping any of the above do away with that comfort.

 

I only notice the vibrations as being bad at idle and around 3k RPMs, I have hasport mounts, b/s delete and traction bars, but no torque damper.

 

lil vib is okay