^ A t28 ka-t on 12 psi will be extremely responsive. I would estimate that a healthy ka should make anywhere between 250-275hp tuned properly with a tubular manifold. (These numbers also depend on the t28 you use...) If you want to make 300hp easily, get a t3/t04e 50 trim. I didn't want to deal with the headaches associated with a ball bearing turbo setup on a ka. (Water lines/no rebuild kits/crappy bottom mount manifolds/etc.)