helo just had an Engine advantages stage 2 up grade for my focus rs, since having the car back fr about 2 months the car doesnt seem to be running right.

the car wont run with a dump valve and when you put ur foot down you some times get a hesatation from the car and it pulls fine again?

Looking at getting the traction kit from Adrenaline racing next, anybody recommend the kit?

Car mods: Stage 2 engine advantsges conversion

Gt28 garrett ball bearing turbo
GGR manifold (ceramic heat coated)
Miltek De-cat pipe
Monogouse De-cat exhaust
Engine advatages intercooler upgrade
Gen 2 induction kit
Bluefin
motorsport ignition leads
denso iridium spark plugs

What do i get next, (i.e. wrc pistons, rods, boost controller) looking for over 400bhp.

Anybody recommend anywhere else to take the car?