2009 WRX Build

I am currently going to see I can get my wrx to 400whp!

I currently have:
Stock block 9,200 miles
Tsudo turbo back divorced uncatted
Injen intake
eBay fmic
Basic Turbo XS boost controller
Blouch TD05H 18g Turbo
On 12psi
Stage 2 Cobb tune

Going to buy
DW 1000cc
Walbro 255 pump
Agency unequal headers
Grim speed up pipe w/38mm wastegate
Perrin turbo inlet
On 20psi
And tuned by Clark Turner

Any changes or adds
Advise is welcome!!!

Invest in a killer Bee oil Pick up. and do some research on a water /methanol kit. Just a suggestion

Sell 18g and get a 20g!!!! Go with equal length headers instead of unequal length. You lose the rumble but smoother air flow which will net you better HP.

What turbo would you recommend?

20g at a minimum, especially if you want to stay with a stock location turbo, otherwise you'll have to go rotated. 18g may be to small to reach the goals. 400whp, you're looking at 480hp at crank. May want to consider bottom end build as well for longitivity as well.

Yeah. that what i was thinking about the bottom end. Think 400 is an achievable amount but why 400? When you hit 400 i think some of your stock components will be on borrowed time. I think have a well tuned car at about 350 will be a better run thou.