Hi all. Im new to this site.

Ive got a 1995 Toyota Camry 220 SEI, ive got a Exhaust System on it and a fat pipe at the end. This car roars like a beast!!!
i want to know if i should modify my engine, will it last? at the rate its going now ive had no problem with it and i want it to go faster!!!
Can anyone give me some tips on how i should go about modifying the engine?

Thanks
Kenneth