I Need Sharper Steering!

[vadr45]

I've read all the posts about whether to buy a front strut tower bar or a rear one; whether to strengthen the front sway bar; whether to defrag the modopulator; and whether it's safe to go to warp speed without Scottie's okay. But I still don't have an answer to the question - what will sharpen my steering control in what is essentially a low-end street car.

Thanks to the previous owner, I have a full complement of upgrades to make my '09 Base 3-door into a street slut:[LIST][*]AFE Intake[*]NST Complete Pulley Set[*]Megan Racing Header[*]Custom 2.25” mid-pipe[*]Megan Racing Axle-back exhaust[*]Toyota Premium Horns w/ splitter[*]“Big Three” wiring upgrade[*]Short Shift Kit w/ bracket[*]TRD Rear Sway Bar[*]Tanabe DF210 Lowering Springs

Nonetheless, I still have a sense that the steering could be tighter, sharper, clearer. I want over-steer and I don't have it. I have read Tanabe's poem:
"Stiffen the front, induce understeer.
Stiffen the rear, induce oversteer."
But I'm not sure what I can do to achieve it. The TRD sway bar should give me what I want, but it doesn't. Will the addition of a rear strut-tower bar give me the sense that I have merely to jerk the wheel to the right and I'll achieve 90 degrees in an instant?

I recall putting a rear strut bar in my JCW MINI and noticing the enhanced steering instantly; the front strut bar did nothing but add weight. Do I need some sort of transverse bracing in the Yaris to achieve my goal? Do I need to over-inflate my tires? Do I need to lower my expectations?

I hurl myself upon your knowledge, People! What can I do?