quick mod : Air intake ,to let engine breath air easily ,
Heavy duty spark plugs as where as clean distributor(from inside) for high flux of charge in spark - Wheels Alignment (optical method)
polished ports of manifolds ,Catback for let air flow from manifold easily {with muffler (4 sound)}
Valve timing tuning , this will make changes to car to reach top speed in quick time ,
alloy rims , dont do on their beauty , its shoulde be light weight ,
as we changes bumpers , rear and front
which is complete rubbish ,
factory (stock) bumper have more Aerodynamics and less air drag ( the testing are done in air tunnel to let know and notice the sliding of air , the slipping of air factor , the resistivity , the coefficient of air drag) then workshop's bumper , they looks beautiful , as they seem to be real sports , but actually In Pak (workshops) bumper , the geometry of bumper are not accurate , more air resistance as compare to stock , they don
t have good aero dynamics , which cause loss of handling on fast driving on straight road , or slight straight path
i recommend u don`t use bumper mods ,
there are so many factor , on which u can improve ur car performance