Hi all, hoping you can help me out.

Ive got myself an my04 sti with a vf22 turbo, currently pushing 190kw atw.

Coming from an evo 9 with 220kw atw im a tad dissapointed and want to achieve similar results.

Im getting silicon intake, cai and possible upping of the boost to acheive hopefully over 200kw atw.

Though ive read the vf22 is old tech an laggy for they power output. My turbo seems to spike to 20psi but drop to as low as 16psi all the way to redline. As you can imagine it feels dead up top.

I was thinking i would take the opportunity while work is being done and tuned to sort this out, that i would upgrade the turbo to something like a blouch xtr td05 18g 7cm? (Or 8cm)

Not sure though if there will be much benefit over the vf22.

Also...what would be the direct equivilant to the evo 9 turbo?

Thanks in advance