The konis have slightly less compression than stock, but the rebound is adjustable. Many times less compression and more rebound is good.

i.e.

less front compression and more rear rebound speeds weight transfer to the front when increasing braking and steering, enhancing turn-in.

On corner exit, when increasing throttle and decreasing steering, less rear compression and more front rebound speeds weight transfer to the rear, planting it.

There are other phases of the corner which must be considered and balanced as well. It's all a compromise based on driver's preference, road quality, driving style, etc. etc. etc.

BTW,

compare oem spring rates to aftermarket spring rates to determine if you will increase oversteer or understeer. The end on which you increase stiffness beyond the stock ratio will overload those tires first. Extra stiff fronts will promote understeer, and exra stiff rears will promote oversteer. All depends what you want.

 

I'm currently on tanabe GF210 springs and I just ordered some 18" wheels. I was wondering if i would have rubbing issues if i got the koni yellows and installed them on the lower perch. thanks

 

So do the Swift springs pair well with stock shocks?

 

Here are some photos of my Tanabe GF210 on stock shocks. My stock shocks had about 20k miles on them... Mild drop, about 1.5 finger gap. Alignment is a must anytime you're swapping suspension components.

 

I'm pretty sure the Koni SA's are not independently adjustable, if you turn the knob you are adjusting both unless you got them reworked to be DA. At least that's how it is on most Koni yellow/sport shocks. I'm surprised to hear that the Konis at full stiff are softer than OEM shocks. The konis on my RX8 turned up to full stiff would rattle your brains out of your nose, even at 54% stiffness they're considerably stiffer than a stock S.