I want to buy an exhaust and an air intake, i will need of reprogram the ECU??
And about the AIR INTAKE, someone told me that with this it takes hot air from the engine area, is true?? is better some other intake system???

 

you can do up to three mods I think before needing an ecu. When you do get an ecu the power fc is the way to go, infinitely reprogramable, plus it gets rid of the 3k stumble and lets you monitor everything, it also has a 16 bit (stock=8 bit) processor or something and it's just plug in and go.

The m2 intake doesnt really take air from engine bay takes it from the right side of the radiator.