Then you already know the answer. Throw that Tein garbage into the closest trash can and get a set of Bilsteins.
BC is the same low-price 'quality' as Tein. Bilstein B6/B8 are excellent value, leagues ahead of D2, K-Sport, Tein
and BC etc. without breaking the bank.
Did you get a proper alignment? If not, get it done. If you already did, post the alignment sheet here. I'll have a
look at it (suspension development engineer and former racing driver). What tires do you run?
Stiffer sway bars/anti-roll bars will help reducing roll and improve initial steering, but you need proper dampers
and proper state suspension bushings incl. correct alignment first.
@MRC01: Lizpat's car doesn't suffer from understeer. He doesn't even mention high-G cornering. So understeer
is likely not an issue. Proper dampers and bushings provided, stiffer front (or ideally both front and rear) springs
and both front and rear sway bars would help to reduce roll without too big penalty. I never ever felt happy with
a bigger rear sway bar only. My guess is, many people just do the rear bar since it's an easy swap and cheaper,
while the front sway bar is MUCH harder to swap on very most cars. Even more I do know from experience that
nearly all those who did the rear bar only never drove the same car equipped with stiffer bars both front and rear.
Doesn't that tell it all? I promise, I can get any FWD car neutral with stiff sway bars and stiff springs on both axles.
ps
probably best to swap the car but guess budget is tight