Ok so far here is what i have in my 03 Evo 8:

Evo 9 turbo
O2 dump (freakn love it)
Mishimoto FMIC
injen upper an lower IC piping
Full turbo back
255 walbro
ssqv Blow off
Hallman boost control

Whats my next move? What will help support or make this set up better?

 

All you need is love..... And cams!

 

Maybe an intake if u don't have one or some cams

 

dump pipe test pipe manual boost controller And/or Cobb access port

 

Intake, cams, injectors and a tune will work wonders for you

 

+1 also a set of headstuds would be a good idea for insurance and new timing belt and components if your already tearing into that part of the engine

 

I would do Cams, springs/retainers, head studs and a re-tune and you will be even more happy

 

Gsc Cams and ARP head studs.

 

Possibly injectors, especially if you go to bigger cams!

 

Cams and injectors

 

how about converting to E85?