Ah 440hp conversion They is the nuts yeah - my bro's mate has a S4 saloon. Same 2.7 V6 bi turbo as the RS4, same 4WD system, only difference is the turbo's are slightly smaller and on different maps, meaning power is only 270/280bhp. He's changed them to RS4 turbo's now, uprated this, that, new exhaust (£1200!!!!!) remap and now upto 340bhp and SHIT loads of tourque!!!!!