Ok so how does the manual shift work? So far ive been going from 1st on up to drive via appropriate RPM. It seems to shift damn good.

Ive smoked my shares of foreign cars and american cars via using manual shift.. Take 1st up to about 6 grand drop it and take each additional up to about 4-5 and drop em.
I was considering getting one of those engine mod addons thats like 10-40 bucks.. Opinions?