As above, would like to know wht BHP people have reached with standard K03 turbos on a S4 2.7. The reaon why I'm asking is I'm pushing mine to the limit and if they go they K04's will replace them. At the minute mine is running 352bhp but I'm removing the cats and the pre cats and replacing them with straight pipes, also have X! air intake along with Wagner intercoolers. Will I see 370bhp once car is mapped with the mods carried out above?