HKS Catless Bellmouth Downpipe WRX / STI (2002-2007) Honda or you're installing a new

or you're installing a new Supercharger pulley

500 mile break-in highly recommended with this set-up

and they will tell you that the best bang for the buck handling mod you can give your Mitsubishi EVO X is a high-performance sway bar

it's too loud for you

In effect caster is the angle on which the steering knuckle rotates

HKS Catless Bellmouth Downpipe WRX / STI (2002-2007) Honda or you're installing a newThis HKS 3 inch catless downpipe with a cast bellmouth design for the 2002 2007 Subaru WRX and STI is constructed from polished SUS304 stainless steel piping and is mandrel bent for the smoothest flow. An upgraded downpipe coupled with tuning is definitely one of the best ways to increase power. NOTE: This catless downpipe is for offroad use only.