well
ok seeing as i'm basically just giving you the shits so far... i might as well give you some personal advice
judging by your car in the pic
it's safe to say that it's low.. too low for anything useful
i'm also assuming you have some sort of s13 suspension in the car, these give a softer springrate than standard a31 items
i can also see that the wheel and tyre combo you're using is very wide tyres, under hard braking this can grind or rub on your suspension struts, or your guards when you turn
perhaps a skinnier tyre with less track would be more suitable?
also raising your car a bit would do wonders
the best idea however is to take it to a professional for a full diagnosis