[Darren69]

Sounds like a nice project! I too have a carbon tank yet to be painted and fitted (worried about ethanol fuel and what treatment to give the inside) but I can comment that I have noticed that the air scoops do make a difference on my S4 as the temp seems to drop faster when on the move, maybe they could be improved with some internal moulding as the later SS models had but I don't have one of those carbuncle fuel pumps in the way.

No doubt the design could be improved but they do work in a rudimentary way and combined with the DP oil cooler which I fitted makes the bike run 10-15% cooler and cool more quickly. I can't understand why the S4 didn't get an oil cooler as standard in the first place, its a 916 engine after all and the fairing on the 916 is designed to channel the cooling air in much the same way as the air scoops do.