HI Eric..>>
You had your good work for your VS, it really value on money.
I improve the performance for my Honda City and can't feel when the gear is change, when the air-conf is kick in during driving.

But for the fuel consumption, I can't make any feedback on it.
Cause my working place is quite near from my house.

HEHE...
Hope my WIRA can have those performance after your VS, wait you once you ready the VS.