New Tunes, A Class - Open Sourced

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1

I’ve struggled with tuning. I’ve read this guide, that guide, spent hours beating and smashing my cars to get tunes that feel good to me and work. With some of these tunes, I can place in the top 5 in public lobby’s. Some I can place in the top 10. Regardless, despite the demolition derby nights these cars are fun for me to drive.

Feel free to comment, offer tweaking suggestions. Some of the tunes you will see things like Tire size, this means I upgraded the tires on the build.

My set up: Controller (with limited movement in my steering thumb), Suggested brake line, Braking - ABS on, Steering - Simulated, Traction & Stability - On.

My Main Car!! :slight_smile:

Ferrari 360

Preferred Tracks:
Circuit de Catalunya - Grand Prix/National
Hockenheim - Full/National

OVERVIEW:
Speed: 7.1
Handling: 5.8
Accel: 8.3
Braking: 5.7
Horsepower: 481
Weight: 2862
Weight Ratio Front: 43.00%
Weight Ratio Back: 57.00%
Speed: 196
Torque: 323
Redline: 8000
Torque RPM: 5000
Front Tire Size: 245/30R19
Rear Tire Size 305/35R19

PARTS UPGRADE:
Fuel Systems: Race
Valves: Race
Pistons: Race
Flywheel: Sport
Anti-Roll: Race
Transmission: Sport
Driveline: Race
Differential: Race
Aero: Both Adjustable

SETTINGS:
Tires: 28/28
Camber Front: -2.3
Camber Back: -1.2
Toe: 0/0
Caster: 6.4
Anti-roll Front: 17.8
Anti-roll Back: 12.21
Springs Front: 815.5
Springs Back: 715.6
Ride Height: 5.9/5.9
Aero: 50/75
Rebound Front: 8.2
Rebound Back: 8.2
Bump Front: 4.8
Bump Back: 4.8
Brakes: 55/170
Differential: 40/20
Final Drive: 4.45

Lexus LFA

Preferred Tracks:
Road America
Watkins Glen - will be enclosed in brackets

OVERVIEW:
PI: 700
Speed: 7
Handling: 5.6
Accel: 8.5
Braking: 5.6
Horsepower: 575
Weight: 3253
Weight Ratio Front: 48.00%
Weight Ratio Back: 52.00%
Speed: 189
Torque: 368
Redline: 9000
Torque RPM: 7000

PARTS UPGRADES:
Air Filter: Race
Fuel Systems: Sport
Springs & Dampers: Race
Anti-Roll: Race
Transmission: Sport
Driveline: Race
Differential: Race
Aero: Both Adjustable

SETTINGS:
Tires: 28/28
Camber Front: -2.3
Camber Back: -1.2
Toe: 0/0
Caster: 6
Anti-roll Front: 19.2
Anti-roll Back: 20.8
Springs Front: 780.72
Springs Back: 845.78
Ride Height: 3.3/3.4
Aero: 37/200 (21/150 - WG)
Rebound Front: 9.8072
Rebound Back: 10.4578
Bump Front: 5.88
Bump Back: 6.27
Brakes: 55/160
Differential: 25/16 (30/16 - WG)
Final Drive: 4.00 (3.80 - WG)

'99 Dodge Viper GTS

Preferred Tracks:
Le Mans Full/Old Mulsanne
Daytona Road and Oval

OVERVIEW:
PI: 700
Speed: 7.6
Handling: 5.5
Accel: 8.6
Braking: 5.5
Horsepower: 701
Weight: 3488
Weight Ratio Front: 49.00%
Weight Ratio Back: 51.00%
Speed: 206
Torque: 686
Redline: 6000
Torque RPM: 5000

PARTS UPGRADES:
Ignition: Sport
Oil & Cooling: Race
Centrifugal Supercharger: Race
Fuel Systems: Sport
Valves: Race
Displacement: Sport
Pistons: Race
Flywheel: Street
Brakes: Race
Springs & Dampers: Race
Anti-Roll: Race
Transmission: Sport
Driveline: Race
Differential : Race
Tire Compound: Street
Aero: Both Adjustable
Aspiration Swap: Centrifugal Supercharger

SETTINGS:
Tires: 28/28
Camber Front: -1.7
Camber Back: -1.2
Toe: 0/-0.1
Caster: 6
Anti-roll Front: 19.6
Anti-roll Back: 19.6
Springs Front: 854.56
Springs Back: 889.44
Ride Height: 4/4.1
Aero Front: 50
Aero Back: 150
Rebound Front: 10.5456
Rebound Back: 10.5456
Bump Front: 6.33
Bump Back: 6.33
Brakes: 55/200
Differential: 45/35
Final Drive: 4.35

Jaguar XKRS 15

Preferred Tracks:
Panorama

OVERVIEW
PI: 700
Speed 7.1
Handling 5.6
Accel 8.4
Braking 5.6
Horsepower 566
Weight 3895
Weight Ratio Front 54.00%
Weight Ratio Back 46.00%
Speed 190
Torque: 523
Redline: 7000
Torque RPM: 3000
Front Tire Size: 265/35R20
Rear Tire Size 315/30R20

PARTS UPGRADES:
Oil & Cooling: Race
Fuel Systems: Race
Flywheel: Race
Springs & Dampers: Race
Weight Reduction: Street
Transmission: Sport
Driveline: Race
Differential : Race
Tire Compound: Sport
Aero: Both Adjustable

SETTINGS:
Tires: 28/28
Camber Front: -2.3
Camber Back: -4.5
Toe: 0/-0.1
Caster: 6.5
Anti-roll Front: 21.6
Anti-roll Back: 18.4
Springs Front: 1051.65
Springs Back: 895.85
Ride Height: 4.6/4
Aero:
Rebound Front: 12.5165
Rebound Back: 10.9585
Bump Front: 7.51
Bump Back: 6.58
Brakes: 55/200
Differential: 25/10
Final Drive: 3.7

(Forgot Aero settings on this. Will update a bit later)

Nissan 370z

Preferred Tracks:
Lime Rock

OVERVIEW:
PI: 700
Speed: 7.5
Handling: 5.5
Accel: 8.6
Braking: 5.4
Horsepower: 557
Weight: 3180
Weight Ratio Front: 53.00%
Weight Ratio Back: 47.00%
Speed: 198
Torque: 432
Redline: 8100
Torque RPM: 6000

PARTS UPGRADES:
Air FIlter: Street
Ignition: Sport
Intercooler: Street
Fuel Systems: Race
Exhaust: Race
Camshafts: Street
Valves: Sport
Displacement: Sport
Brakes: Race
Springs & Dampers: Race
Anti-Roll: Race
Weight Reduction: Street
Transmission: Sport
Driveline: Race
Differential : Race
Tire Compound: Sport
Aero: Both Adjustable
Aspiration Swap: Twin Turbo

SETTINGS:
Tires: 28/28
Camber Front: -2.3
Camber Back: -1.1
Toe: 0/0
Caster: 6
Anti-roll Front: 18.8
Anti-roll Back: 21.2
Springs Front: 747.5
Springs Back: 842.7
Ride Height: 4.3/4.3
Aero: 75/175
Rebound Front: 7.4
Rebound Back: 8.4
Bump Front: 4.44
Bump Back: 5.04
Brakes: 55/175
Differential: 30/15
Final Drive: 4.1

Alfa Romeo 8C

Preferred Tracks:
None, still working on this one.

OVERVIEW:
PI: 700
Speed: 7.1
Handling: 5.3
Accel: 8.6
Braking: 5.2
Horsepower: 530
Weight: 2744
Weight Ratio Front: 50.00%
Weight Ratio Back: 50.00%
Speed: 189
Torque: 398
Redline: 8200
Torque RPM: 5000

PARTS UPGRADES:
Air FIlter: Race
Intake: Sport
Oil & Cooling: Sport
Exhaust: Race
Camshafts: Sport
Flywheel: Street
Brakes: Race
Springs & Dampers: Race
Anti-Roll: Race
Weight Reduction: Race
Transmission: Sport
Driveline: Race
Differential : Race
Aero: Both Adjustable

SETTINGS:
Tires: 28/28
Camber Front: -2.3
Camber Back: -1.2
Toe: 0/0
Caster: 6.5
Anti-roll Front: 1372
Anti-roll Back: 1372
Springs Front: 686
Springs Back: 586
Ride Height: 4.1/3.6
Aero: 78/180
Rebound Front: 6.96
Rebound Back: 5.96
Bump Front: 4.18
Bump Back: 3.58
Brakes: 55/170
Differential: 25/10
Final Drive: 3.75

Have a few more i’m working on. Still trying to find a car to compete with on YAS. Currently I run the 360 or the LFA. They can handle the turns fine, but don’t have the top end to keep up with everyone.

2

Thanks for sharing, will deffo give them a go…:+1:

3

Turn simulation steering off and run normal. With sim steering on plus tcs and STM, I can see your car losing a lot of time from the tcs and STM light constantly flickering. The odds of this happening are higher with sim steering on. You also don’t need a nerfed thumbstick. Just run 0-100 deadzone setting.

Nothing wrong with using sim steering, but if you have to run tcs and STM with it, then you should drop it.

4

I only build for D class however I know lime rock and Daytona well. These are 2 tracks I tune cars at frequently. I know what kind of cars these tracks prefer and your 370z and Viper builds appear off.

I’ll try them out as is and propose build changes afterwards.

Basically Daytona and lime rock are where the extreme builds shine. Daytona is all out power at the expense of tires and sometimes tunable handling parts like springs. Lime rock is an all out grip track where power is irrelevant and grip is king. It’s a momentum track and things such as race tires, roll cage, and max weight reduction are more important than power.

Your Viper and 370z appear to be cars that might be suited better at other tracks.

I’m willing to bet tuning isn’t your issue. It’s builds and the sim steering + tcs + STM combo.

I’ll try these two cars later today.

5

Appreciate the responses.
The viper does get beat a bit on the straights at daytona. But it seems to handle well for me in the corners. As for lime rock, i see on avg, race winners running about 53-55 seconds laps. I can pull 56-57. I know it can do better, but a lot at that point is me hitting the brakes too much going into a corner. Looking forward to more info.

6

I ran a 55.1 in your 370z and it was a struggle. The upgrades you have on it overpower the track. I was mostly hanging on vs consistently hitting the corners.

A few notes on the 370z…

  1. Twin turbos likely aren’t needed if this car is meant to be grip based. Use a centrifugal supercharger instead if you really want that acceleration boost. The centrifugal also saves a lot of PI

  2. Never use cams unless it’s all out power or some weirdo low torque motor like an elan. Generally the cams only increase incidences where you lose grip on acceleration. Cams usually = too much power on road. They also use a lot of PI.

  3. The 370z is heavy. In this instance I built it around max weight reduction to see what was possible.

  4. 370z isnt all that great around lime rock even with max grip. It simply overpowers the track at times.

Here is my build:
Fuel system = street
Exhaust = sport
Valves = race
Pistons = race
Brakes = race
Springs = race
Roll bars = race
Roll cage = race
Weight reduction = race
Driveline = race
Differential = race
Race tires
Max front and rear tire width
Lightest rims
Forza aero
Centrifugal supercharger

Tune:
Tires = 28/27
Camber = -2.3/-1.9
Toe = 0.1 / -0.1
Caster = 3.5
ARBS = 10.2/19.4
Springs = 592.8/534.6
Height 4.1/4.1
Rebound = 9.5/8.2
Bump = 4.7/4.2
Downforce = 77/170
Brakes = 48/140
Differential = 40/20

Tune isn’t perfect and springs somehow got adjusted up. They should have been a little softer but oh well. Rear ARBS might be too high for some. 13/15 ARBs weren’t bad.

Currently at a 53.577 with the car but it could be in high 52s with refinement. Barely a top 1,000 car so it’ll get beat, but it’s in a near 3 way tie for fastest 370z. Lol. I’d personally would race something a little more user friendly. 370 just has too much power.

7

+1, …Have not been around much on Forza, might check this out in the next day or so.

PRKid
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8

Thanks for the input. Still haven’t found another car i like for that track. But still looking. I redid all of the build and settings based off another car I have. It seems to handle better. Not the fastest but plenty of top 5 and 10 finishes. Only part that gives me real issues is the chicane. I believe this set up is correct. It’s what i wrote down. Will have to check the game.

Speed: 6.9
Handling: 5.9
Accel: 8.4
Braking: 5.9
Horsepower: 430
Weight: 2777
Weight Ratio Front: 52.00%
Weight Ratio Back: 48.00%
Speed: 180
Torque: 349
Redline: 8100
Torque RPM: 5500

Air Filter: Sport
Ignition: Race
Fuel Systems: Race
Pistons: Race
Brakes: Race
Springs & Dampers: Race
Anti-Roll: Race
Chassis: Race
Weight Reduction: Race
Driveline: Race
Differential : Race
Tire Compound: Race
Aero: Both Adjustable
Aspiration Swap: Centrifugal Supercharger

Tires: 25.5/25.5
Camber Front: -1
Camber Back: -1
Toe: 0/0
Caster: 7
Anti-roll Front: 33.42
Anti-roll Back: 19.36
Springs Front: 598.9
Springs Back: 559.8
Ride Height: 4/4
Aero: 100/200
Rebound Front: 9
Rebound Back: 8.7
Bump Front: 5.20
Bump Back: 4.70
Brakes: 55/200
Differential: 17/12

9

Np. It’s a track I used to hate until I started to appreciate the unique builds required.

It’s a mega grip track but you still need a car that can hold momentum well and has just enough acceleration out of the chicanes and a tad bit of top end for the front straight. It’s a track where time spent braking and off the gas is time wasted.

More acceleration is needed for the alternative routes it seems.

It’s a challenge finding the right car but generally super light weight cars are a good starting point. I’d say look for a car with a starting weight no more that 3,000lbs. Weird cars may work. I know I made a 87 trans am competent there. No world beater but a challenger for a podium.

10

.
Well, I finally got a break and tested these builds and to Swerve’s point…it is certainly a “unique” challenge of this car/class/track combo. My best runs were with Swerve’s build, yet, I was still having challenges with the power/torque levels, thus, I swapped in a Sport Tranny and reduced power to 425 HP/431 Torque (Race Air Filter/Valves/Pistons, and, other change was to a Sport Driveline for an overall build weight of 2864 lbs). The tires were burning up, so, I used high Accel & Decel settings (80/55) and much lower springs. I ran pretty much in 4th and slight 5th gears. My time was still in the high 54’s. With a little more of tweaking, especially power-on oversteer, I could probably manage a new PB. Yet, been off for awhile, so could also be lack of practice.

PRKid
.

11

Oooops…I almost forgot to post the overall build/tune if you’d like to check it out.

.
A700

Conv = 5.7L V8, CSC
Aero = Race F/R
Tires = Race Compound, F275/35R19, R295/35R19, Magnum III rims, rims stock
Drive = Sport Tranny, Sport Driveline, Race Diff
P&H = ALL Race
Engine = Race Air Filter/Valves/Pistons

425 hp/431 lb-ft, 2864 lbs (53%), 6.6/6.0/8.3/6.0

28/27
3.35
-2.4/-2.4
0.1/-0.3
5.0
10.02/14.06
405.6/304.3
4.1/4.0
9.5/8.5
3.0/2.0
80/200
48/140
80/55

======

PRKid
.

12

Thanks. I’ll give this set up a try this weekend.