boost controler, what do they do ? Options

[popstar]

as the title says !

what does a boost controler do, will it increase your boost ?
why do people with boost controlers clam to have more power ?

or am i just being total stupid and not understanding something, cause all the blub i read where there selling them never explains exsactly what they do or why you need them, they seem to think if you need one you know what it does...

please shed some light on this for me...

thanks

Popstar in dumb blonde mode

[presure2]

a boost controler, and a boost gauge, are 2 totally diffrent things.
a boost controler goes between your wastegate actuator and turbo, and basicly bleeds off boost to the actuator, makeing it see less boost then what your actually making, which in turn makes the wastegate stay closed longer, and that causes you to build more boost which = more hp. a good electronic boost controler goes about 400+ or more, there are also manual boost controlers which are genrally much cheaper( i paid ~50 for mine) but dont offer the in-cabin adjustability, and genrally will spool a TINY bit slower.