Here is my adapted tune from my SRT Viper GT3R replica :
Dodge SRT Viper GTS '13 GT3R Max Power Replica
Special Build Dodge SRT Viper GT3R Max Unrestricted
FITT Challenge Viper Strike
( Flat Floor version )
Sports Soft
CAR : SRT Viper GTS '13
Tire : Sports Soft
Specs
Horsepower: 680 HP at 6500 RPM
Torque : 649.4 ft-lb at 5300 RPM
Power Limiter at : 94%
Weight: 1300 kg
Ballast : 50 kg
Ballast Position : 44
Weight Distribution : 49 / 51
Performance Points:
618
GT AUTO
NO OIL change
Improve Body Rigidity (
INSTALLED IN THIS BUILD ) -
MANDATORY as the real Viper GT3R has roll cage and chassis reinforcements, as well necessary for racing tire fitment.
Aero Kits Type A
Flat Floors Type A
Rear Wing - Generic Wing Type A
OR
Custom Rear Wing :
Wing Mount Standard Type D
Wing Large Type A
Winglets Type A
Height +0 and Width +44
Wheels : Standard Size BBS RE-MG in Silver
Car Paint : Bright White Clear Coat Black Stripes
Tuning Parts Installed :
Racing Exhaust
Isometric Exhaust Manifold
Intake Tuning
Triple Plate Clutch
Carbon Drive Shaft
Fully Customizable Dog Clutch Transmission
Adjustable LSD
Fully Customizable Suspension
Racing Brakes Kit
Weigh Reduction Stage 3
Window Weight Reduction
Suspension -Coilover with 4 Way Damper - High Camber Setup
Front, Rear
Ride Height: 85 85
Spring Rate: 16.07 14.02
Dampers (Compression): 6 8
Dampers (Extension): 5 8
Anti-Roll Bars: 3 3
Camber Angle: 3.2 1.8
Toe Angle: -0.16 0.08
LSD - 2 Way Mechanical Ramp Style LSD
Initial Torque : 30
Acceleration Sensitivity: 30
Braking Sensitivity: 30
DOG CLUTCH TRANSMISSION - XTRAC 427D 6 Speed Paddle Shift with 416 Ratios
Install all power parts
Set Default
Set Final to 4.150
Set Auto Max Speed at 240kmh / 149mph
Adjust each gear :
1st 3.170
2nd 2.071
3rd 1.647
4th 1.350
5th 1.143
6th 1.000
Set Final : 2.889 ( Adjust to track if necessary )
AERO
REAR : 20 ( MAX )
Brake Balance:
3/2 ( personal BB) or for ABS 0 wheel : 3/2, for ABS 1 - feel free to use your preferred brake balance. I recommend to run 3/2 for ABS 1.
Recommended setting for DS3 user :
Steering sensitivity at +1 or +2, all aids off, except ABS 1 ( if not comfortable with ABS 0 ) with 3/2 brake balance as starting point.
Notes :
This is FITT Challenge - Viper Strike version with high camber, a bit added weight and NO OIL Change to fit with the regulations
I started building the replica recently, helping another member giving tips on tuning a replica. I got curious and build one myself. This particular replica is flat floor version with considerable more grip from front and rear downforce.
The Viper GT3R has ( unrestricted ) 680HP and 640 torque, while in GT6 I have a slightly higher torque at 649 ( closest I can get ) with NO Oil Change
For suspension, I tuned the car for easier turn in, while remain as stable as possible, springs are quite stiff at 16k/14k. ARB and damper setup to give the best possible mechanical grip from mid to exit and to work together with the added flat floor + rear diffuser. High Camber setup has been implemented for this FITT version.
LSD is 2 way as usual for cars fitted with racing tires, high preload to reduce the car handling changes during entry transition to mid corner, while high locking rate to make the most of the massive torque, some throttle control is required on low speed exit.
Gearing uses ratio from XTRAC 416 instead, as 427D ratio has too close 5th and 6th. The gearing is well suited for the car, giving good spread and good acceleration on all gears.
I tuned and tested at Tsukuba, Brands Hatch GP, Trial Mountain and Silverstone GP.
At Trial Mountain, it easily lap in low 1:26s range on SS tire.
Feel free to leave any feedback about the car
ENJOY