First, I have an k&n air filter and i think its draining hot air, should i change it ?
Secound, i have an air-filter, exhaust, HFC, and Tuning.
i need to modify more.
what do you suggest ?

 

Twin Turbos...Seriously

 

drop & 20inch wheels

 

^This. Get a real intake. And raul lights.

 

1. I'm not entirely sure what you're saying, but I'd sooner get a new intake rather than replace some filters.

2. Before you go asking us for input on what to mod, decide on a rough goal. Appearance, power, handling, etc. - this is ultimately your car.