The Impreza BCs used to be prone from nosies from the back on a small number of New age cars but this has been 100% eradicated with the new rear top mount design that was introduced earlier thsi year. The later Imprezas run the rear dampers at such an angle as to generate noise from the normal top mounts used with the BC Racing coilovers.
This design works perfectly well with the majority of the cars but not the later Imprezas. The later Imprezas transmitted noise through the top mount into the cabin. Oddly this only effected a small number of vehicles, not all. As such we had the factory make this design which is now default on all later Impreza BR Series kits. Its based on the original design and works extremely well in eliminating noise from the rear units:
As an aside, we have just had one of our trade customers on the phone, JMS Motorsport. They specialise in Ford Focus RS tuning. Performance Ford ran a track day today at Brands Hatch. One of JMS Motorsports customers was there with their 400bhp conversion and a set of BC Racing BR Series coilovers.
The customer says he was the fastest thing on track and thats including more powerful track built Focus RS's running slicks
Just a snippit of info that we just recieved that Im passing on.