honestly, i do not know how to map my car, but i believe that with a chip (10 bhp), an exhaust (10 bhp), an air intake filter (5 bhp)...well here we have 25 bhp. On the other hand, changing pistons, cams etc you can achieve vey good power. For me, there is nothing more exiting than modifing your car. The question is...where is a pro to do it?