A quick google search and up pops this thread
Yes its very early days at the moment. the car only hit the dyno on christmas eve. its currently on stock 400 cell pre cats and has an apt exhaust fitted with 100 cell post cats. pre cats are a problem as we expected but wanted to test with them in first. The kit is fitted with twin c38-61 superchargers which are capable of around 1700cfm (rs4 kit was single c38-91, around 1100 cfm) the main aim of running 2 superchargers is not to make silly high peak power but to make boost sooner and pump up the midrange curve over the rs4 kit. example being 100Nm up on the rs4 @ 5000rpm. saying that we have already seen 700+ on a restricted boost level.
details will come as and when but we now have a small delay while we wait for some parts to continue testing. but initial results are looking very very good indeed.
Saki, please remeber that when comparing rpm/sec between different kits you would need to know what load was applied to the dyno & what gear it was run in