I have got a 93 honda del sol esi with a remus exhaust and a friend of mine got a 93 honda civic with 90 hp with an empty selfmade exhaust. My car gets up to 220 km/h and his one too. how could I make my car go a bit faster? I pulled out some of the wool in the exhaust, but I am afraid put out more of the wool, because some people say reums exhausts could sound like an empty can with a metal ball in it. So is there any other possibilty to make my car go faster without spending money and without destroying the motor?