BRZ Drift tune? (Updated Springs!)

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Wondering if anyone still tinkers with tunes. I’ve try’d a lot of different things on this car using the weight algorithm and what not. Wondering if anyone likes to talk shop over tunes.
Article for reference "Tuning Guide for Drifting - http://forums.forza.net/turn10_postst10610_Tuning-Guide-for-Drifting.aspx "
The car is all race spec, minus street tires and wider front and rear rim sizes.

Subaru BRZ
428hp
300ft/lbs torque
2,324 lbs
Front 53%

Tire Presssure:
F=25.5
R=24.0

Final Drive 3.82
1st 2.89
2nd 1.99
3rd 1.47
4th 1.16
5th .94
6th .78

Camber
F=-1.7
R=-.6

Toe
F=.3
R=.1

Front Caster Angle = 5.0

Anti-roll bars
F=21.72
R=19,36

Springs
F=580.7
R=526.5

Ride Height
F=6.0
R=5.4

Rebound Stiffness
F=6.8
R=6.2

Bump Stiffness
F=4.9
R=4.6

Downforce
F=75lbs
R= (no spoiler equipped)

Baking Force
Balance = 70
Pressure = 120

Differential
Acceleration = 70
Deceleration = 60

Tire pressure might need some tinkering and
I find myself tinkering with Ride Height a .1 at a time. (+/-)

Differential I find works well if you move both (+/-) Acc . and Dec. in level increments. (Ex. Acc. 70 +/-5% Dec. 60-50 +/-5%)

Camber is tricky, try to keep the rear camber and toe the same, it’s dialed in, but tinker with the front caster, camber and toe. If you find adjusting the rear has helped, I’m all ears!

Gearing needs a little work so if thats your department again I’m all ears (and everyone else prolly is too)

Anti-roll bars are dialed in by the weight algorithm. As are the springs. (as of the UPDATE , and if my math is off, lemme know)

Damping is also up for grabs but try to leave the rebound, it too is an algorithm

Aero also up for grabs

Braking seems on point to me, but improvements are why I’m posting.

Have fun, discuss (positively) and share your upgrades of this tune! Thanks guys!
Search this tune on Xbox @ JSHKIDD218 “BRZ Drift Tune”

UPDATE!-
Updated math for Springs F & R

Front
963.1 - 120.4 = 842.7

842.7 x .53 = 446.631

446.631 + 100.000 = 546.63
New Front Spring - 546.4

Rear
842.7 x .47 = 396.069

396.069 + 100.000 = 496.069
New Rear Spring - 496.1

You can find the updated tune on XBOX @ JSHKIDD218 “BRZ Drift Tune U”

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Is this tune based for the wheel or controller if you don’t mind me asking?

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Controller, but I’d like to see if someone with a wheel likes it, or makes any improvements as well to it. But yes it is for a controller. Also check the updated math on the original post too! Thnx btw!