If you do the whole car as a process of removing and relocating weight you can save a significant amount and have better front to rear balance, lower CG, etc....The last time I weighed my car it was 2575lbs and I have done much more since, added a bit, taken more out, moved 50 lbs to the rear to help make up for the rear seat delete, and it has a sunroof which I wish I had not decided on as got it for the doggies when we have to leave them in the car for more air flow but seldom had to use it. I also put in a few hundred hours into this and considerable funds, but worth it to me. Another car I did starting in 05, Scion TC, ended up being 265lbs lighter than stock with a cage, full interior except back seat but carpeted there, fully sound deadened, foam filled chassis, AC, two Racetech seats and harnesses and an audiophile competition winning sound system than also hit 138.4db on music for 2 minutes though not built for bass comps, took 5th in a Pro Solo and 2nd in a Reline TT event against far more built and gutted cars.
As stated here before, the Ti exhaust is cool, love saving weight, not going to make much difference in handling as in the middle of the car and down low but will help acceleration and braking a bit, there are other ways to gain more performance benefits for the money but some just want to have a cool exhaust, I get it