mengsuan, I have already run in approx. 900 km by now with the WS2.
Can tell that the engine noise has reduced significantly. .
Without any bonnet sound proofing, I can still hear the engine noise if I stand beside the driver door at a open area (i.e. open air car park) but very light compare to before
If with bonnet sound proof, maybe can barely hear it. .
as suggested by elton, the max. potential of WS2 can only be felt after run in period of 500 km or so. .
FC wise, I still cant find any significant improvement
maybe its my right foot. .
smooth rev wise, yes, very much increased smooth revving. .
in fact, very rev happy. .
i love it when I am using bhp petrol with that ws2. .
camtakpro roughness reduced and more rev eager and happy. .
mine u, as i still under walanti, my eo is only shell hx7

so, if assuming you use better eo, then the result will be better as well i guess. .
This post has been edited by ruby1288: Dec 26 2013, 11:00 AM