What have you noticed from adding one or both... And what is the difference between then? Worth the $$$?

 

Depends on what you want: the engine damper does not limit or reduce the travel of engine motion, it just slows it down, while the bushing reduces fore-and-aft engine motion to almost nothing.

The down side of the bushing is that it also transfers more noise and vibration to the car, mostly at idle, and especially with the A/C on.

If I were commuting in my MINI, I'd take the poly bushings out again, but meanwhile I do like the positive launch control and the removal of the lurch when you take your foot off the gas, which the bushing is responsible for.

 

Good to know! Do you get that with the engine damper?

 

I may have exaggerated the amount of vibration from the bushings - it is not noticeable except at idle, but it would bug me if I sat in traffic a lot. It goes away at 1100 rpm.

You shouldn't get much vibration through a damper if the valving is properly chosen.

However, if you have an automatic, letting it sit in gear will transmit more vibration - you would probably prefer going to Neutral when stopped with either a damper or torque-mount bushings (their proper name).

 

I have an MCSa with the Poly lower engine bushings. The only vibrations I get are between 900 and 1100 rpms. When the car warms up, and the idle rests, I have no vibrations, even with the car in gear, as the idle is just below the vibration range.