Hi, getting my car remapped at the end of next month but can't decide what back box to go for. The car will have a de cat up and down pipe, forged motorsport dump valve, a green air filter and which ever back box I decide on.
What will be better, the 3 inch one that is on there (we think it's toyosport but that is only in comparison to pictures, it came on the car) or the sti back box I was given.
The car is a 2005 blobeye wrx. I hope someone can help me to decide.

 

At standard turbo levels it probably makes no difference at all. Go for the one you like the sound of.