Ive been looking at the apexi boost contollers. Which is the best apexi boost contoller which would fit?

 

as far as i'm aware they all fit! just depends on how much you wanna pay for one!!

 

Some are better than others. Depends what you want though and how much you want from the car. In my opinion it isn't worth spending £400 on a boost controller for a standish car when a £200 one will do the job fine.