I have decided to share this setup with all of you to see what everybody thinks of this setup, if it is possible to make this even better i would love any ideas you can give me.

Here is my parts and setup

S engine akp lvl 4, hrm lvl 4, uni lvl 5
Turbo
Turbo kit lvl 5
Intercooler gme lvl 3
Turbine tzm lvl 4
Air cleaner trm lvl 4
S muffler h lvl 5
Cooling module lvl 4
Rom lvl 4
Transmission lvl 2
Clutch lvl 5
Lsd 2 way lvl 2
Suspension lvl 4
Brake lvl 5
Weight down lvl 4
Tires Racing lvl 5
Carbon bonnet colored
Carbon trunklid colored
Gt wing type 1

Gear ratio default
Initial torque rear 3
Lsd ratio rear 3
Spring rate front 2 rear 3
Damper front 2 rear 3
Stabilizer front -2 rear -3
Ride height front and rear -24
Toe front 0 rear -2
Camber front and rear -30
Brake effect front 4 rear 6
Handbrake 100%
Wing angle 10
Tract control 3
Abs 5
Rom is all the way to the right

i'd say lower the wing angle and tcs.

light tcs is supposedly ok for pure grip cars. since real race cars often use tcs, because when it kicks in, you know you are not driving right. TCS kills power and locks tires though. Maybe just 0-2 though. You already have downforce and race tires, which is a lot better than tcs since they dont lock tires the wrong way
wing angle is also good but too much. It kills acceleration due to too much drag. 2-5 is usually good for most cars. I've never even tried driving with so much downforce though.

i use my wings at 9 occasionally, i see no issues using that setting, drag is fine, its the corner that counts

surprisingly i made a grip setup for mine.

cant remember the tune, but it runs fast on Shiga.

p.s cant tell you time, hatchi is watching >.<

jks lol/.

theres no just kidding, i am watching

I finally got time to test this setup out tonight and here is what I would recommend changing. Firstly, I wouldn't use 2-way LSD for a grip car - this LSD tends to break the tires loose when you let off of the accelerator (which is why it is used more for drifting). Stick to 1-way, or 1.5-way for grip - personally I recommend 1-way.

For setting changes, I went with a similar setup as the Supra RZ one you have. Car responds really well for me - hopefully it will help you out.

Spring rate: +2 (Front), +3 (Rear)
Damper: +3 (Front), +2 (Rear)
Stabilizer: 0 (Front), 1 (Rear)
Toe: -2 (Front), 1 (Rear)