I think you guys are right re: red/yellow unfortunately the kit I was initially sent from D911 was missing the other yellow bushes so I went with what I had at the time as Hartech were waiting to put the engine back in the car.
I do think there is something subtle in how these mounts are installed that effects the resonance. On my 993 other than a vibration at idle there was hardly any change from standard more a subtle harder edge to the engine tone.
Currently they are ok and worth the harshness for the improvement in handling but I will recheck them soon.
I do think there is something subtle in how these mounts are installed that effects the resonance. On my 993 other than a vibration at idle there was hardly any change from standard more a subtle harder edge to the engine tone.
Currently they are ok and worth the harshness for the improvement in handling but I will recheck them soon.