yeah weight reduction is the best thing that you can do for your car's performance, best thing of it all is it won't cost you any money
. also i might add that unsprung weight is the best too lose like your wheels, upgrading to lightweight wheels can prove to be a very effective gain. For those with GTS celica's may i suggest the veilside exhuast, not as much gain as th eTRD but the weight of only 8 lbs can surely make up for it. Good tuning everyone