Once again I'm asking for Your help

[Grabarz]

Hello there i decided to create Nismo Z-Tune version of R34 GTR for my own offline races
stock R34 should be about 1600kg, AWD, 2.6L L6 twin turbo engine, "276 HP (206 kW) @ 6800 rpm and 260 lb·ft (353 Nm) @ 4400 rpm. By the end of production, power levels had gone up to around 276 HP (206 kW) @ 6800 rpm and 289 lb·ft (392 Nm) @ 4400 rpm"- wiki

Other source: L6, 332 PS (244 kW, 392 Nm) (advertised as 276)

In game Nissan is V-spec version has 325 HP and 392 Nm of torque - Vspec version is just different aero parts ...

however real Godzilla has been build in just 20 specimen they call it Z-tune
http://www.nismo.co.jp/Z-tune/contents_e.html

368KW (500 HP), 540 Nm of torque 1600 kg of weight - and here it comes

I'm trying to figure it our how power settings are working in AC
there are 2 files that i found: Power.lut and Power_ORl.lut

Power.lut:
0|125
500|125
1000|130
1500|155
2000|172
2500|200
3000|206
3500|230
4000|227
4500|223
5000|228
5500|225
6000|222
6420|211
7000|190
7500|173
8000|165
8500|106
9000|0
I Can't figure it out what are those values Kilo Watts ? Horse Power?, Wheel Horse Power?, Torque ?

Power_ORl.lut:
-3000|100
-250|100
0|100
500|120
1000|124
1500|129
2000|197
2500|238
3000|281
3500|306
3750|310
4000|304
4500|300
5000|302
5500|288
6000|280
6500|274
6700|267
6800|264
7000|256
7250|246
7500|213
8000|0
Same its more similar to Torque curve but still it lacks of torque...

Second problem lies into tyres ....
Z-tune had 265mm wide tires meanwhile stock/vspec/vspecII had 245mm wide ...
I'm trying to create a little bit more sticky tires for that version however my lack of skills and language barrier

WIDTH=0.245
RADIUS=0.3266 ; tyre radius in meters
RIM_RADIUS=0.254 ; rim radius in meters (use 1 inch more than nominal)
ANGULAR_INERTIA=1.62 ; angular inertia of front rim+tyre+brake disc together
DAMP=500 ; Damping rate of front tyre in N sec/m (values usualy from 200 to 1400)
RATE=358000 ; Spring rate of front tyres in Nm
DY0=1.2798
DY1=-0.050
DX0=1.2368
DX1=-0.046
WEAR_CURVE=street_front.lut ; file with lookup table to call
SPEED_SENSITIVITY=0.002563 ; speed sensitivity value
RELAXATION_LENGTH=0.0739
ROLLING_RESISTANCE_0=12 ; rolling resistance constant component
ROLLING_RESISTANCE_1=0.000505 ; rolling resistance velocity (squared) component
ROLLING_RESISTANCE_SLIP=5248 ; rolling reistance slip angle component
FLEX=0.000679 ; tire profile flex. the bigger the number the bigger the flex, the bigger the added slipangle with load.
CAMBER_GAIN=0.158 ; Camber gain value as slipangle multiplayer. default 1
DCAMBER_0=1.1
DCAMBER_1=-13 ; D dependency on camber. D=D*(1.0 - (camberRAD*DCAMBER_0 + camberRAD^2 * DCAMBER_1)) , camberRAD=absolute value of camber in radians
FRICTION_LIMIT_ANGLE=8.1 ; Friction limit angle.
XMU=0.28
PRESSURE_STATIC=35 ; STATIC (COLD) PRESSURE
PRESSURE_SPRING_GAIN=10200 ; INCREASE IN N/m per psi (from 26psi reference)
PRESSURE_FLEX_GAIN=0.6 ; INCREASE IN FLEX per psi
PRESSURE_RR_GAIN=1 ; INCREASE IN RR RESISTENCE per psi
PRESSURE_D_GAIN=0.006 ;loss of tyre footprint with pressure rise.
PRESSURE_IDEAL=40 ;Ideal pressure for grip
FZ0=3208
LS_EXPY=0.89
LS_EXPX=0.89
DX_REF=1.20
DY_REF=1.20
FLEX_GAIN=0.183
FALLOFF_LEVEL=0.87
FALLOFF_SPEED=4

Which value i should change to get more sticky tyres
P.S i tried to change width

Can You guys tutor me?

 

[ltcars]

The Power.lut gives the torque values.

 

[Terra21]

For tyres use the Content Manager app for AC.select the change tyres option.. it will show you all cars that have similar tyres and compounds for you to choose from that can be applied to your nissan.

http://www.wentec.com/unipower/calculators/power_torque.asp

 

[Stereo]

The Power.lut gives the torque values.

Yeah, in newton-metres at the wheel (so less than almost any manufacturer quotes since they like crank power)

 

[YnungerNutt]

Yeah, in newton-metres at the wheel (so less than almost any manufacturer quotes since they like crank power

As the at-wheel torque changes with selected gear, what gear ratio is the power.lut assuming? 1?

Sorry for bringing up an old post, thanks

 

[YnungerNutt]

Also if anyone knows, as I cant find anything on this online, what equation do kunos use for rolling resistance of tyres? is it as simple as constant + (V^2*other component)? and is that per wheel or per axel?