(Taken from a previous post)
https://www.gtplanet.net/forum/showthread.php?p=5337507#post5337507
After about a week of initial testing, here's my mini-review:
I had to get acquainted with the new pressure, as I usually wear only socks.
The increased tensions are definitely intended for you to wear some light footwear.
Brake pedal - feels real good once you adapt to the throw and pressure. Im using the rubber piece so you dont have that bottoming out feel. Best Mod for the money of course if you dont want to pay an arm & leg for a load sensor based mod. The brake now has the progressive feel a real brake is supposed to have.
Clutch - I started with the included clutch spring and noticed the real increase in pressure required. IMO, it was a bit too progressive and stiff. The clutch almost felt like the brake pedal thats about 15% less stiffer. The Spring shortens the clutch travel distance to about 75% of the original distance - because of that, I noticed by H-T downshifting accuracy increase. It made it hard to miss-shift. However, the actual "feel" of it just didnt feel like a clutch Im used to on a normal car.
My final setup: Clutch - Using the stock G25 Brake Spring - Stiffer than stock, best simulates that smooth throw on a real clutch. Using this spring leaves you with the full throw of the clutch and increased pressure.
Gas - Using the stock G25 Clutch Spring - liking the increased tension. Might remove one coil to lessen the stiffness. I would like to make the stiffness a bit less than the clutch.
Brake - Nixim Spring w/ Rubber.