First and foremost I focus on grip; Meowmobiles™ must land/attempt to stay on all 4 wheels. When possible I tuned each gear by hand to get the best top speed I can, plus the best 0-60 & 0-100 speed. I labored over each inch of these cars to make them street safe and also handle the rough terrain of the off road. I hope you enjoy them, and win many races. They has been lovingly scratched and shed upon by the randomness of a cat.
They are intended for “All Around” purposes. I drive with no assists except Automatic shifting. I do use simulated steering on a controller. When needed off-road see the quick tune for off-road after the car listings.
Note: Excel sheets are down. OneDrive ate them, nom, nom, nom. If you need one, message me and I’ll see if I can track it down
Meowmobiles™ for the masses. (search) “Kitty Tuned.”
D Class
- 1966 Ford Lotus Cortina {Classic Racers} Added: 02/20/2015
- 1963 Volkswagen Beetle {Cult Classics} Added: 12/08/2014
- 1981 Volkswagen Scirocco S {Retro Hot Hatch} Added: 12/31/2014
C Class
B Class
- 1958 Aston Martin DBR1 {Classic Racers} Added: 02/18/2015
- 1962 Ferrari 250 GTO {Classic Racers} Added: 02/18/2015
- 1968 Lancia Fulvia Coupe Rallye 1.6 HF {Classic Rally} Added: 01/17/2015
- 1965 Mini Cooper S {Classic Rally}
A Class
- 1965 Alfa Romeo Giulia TZ2 {Classic Racers}
- 1986 Alfa Romeo Spider Quadrifoglio Verde {Cult Classics} Added: 01/27/2015
- 1983 Audi Sport Quattro {Group B Monsters}
- 2014 BMW M235i {Super Saloons} Added: 02/10/2015
- 2012 Cadillac Escalade ESV
- 1957 Chevrolet Bel Air {Cult Classics}
- 1992 Ford Escort RS Cosworth {90s Rally} Added: 12/18/2014
- 1977 Ford Escort RS1800 {Classic Rally} Added: 12/18/2014
- 1956 Ford F-100 {Cult Classics} Added: 12/19/2014
- 2011 Ford F-150 SVT Raptor {Extreme Offroad} Added: 12/29/2014
- 1981 Ford Fiesta XR2 {Retro Hot Hatch} Added: 12/30/2014
- 1966 Ford GT40 Mk II {Classic Racers} Added: 12/18/2014
- 2015 Ford Mustang GT {Modern Muscle} Added: 12/19/2014
- 1987 Ford Sierra Cosworth RS500 {Retro Saloons} Added: 12/29/2014
- 1993 Ford SVT Cobra R {Retro Muscle} Added: 12/31/2014
- 2013 Hyundai Genesis Coupe 3.8 Track {Sports Cars} Added: 01/30/2015
- 2013 Hyundai Veloster Turbo {Hot Hatch} Added: 12/19/2014
- 1986 Lancia Delta S4 {Group B Monsters}
- 1994 Nissan 240SX SE {JDM Icons}
- 1971 Nissan Skyline 2000GT-R {Cult Classics}
- 2013 Subaru BRZ {Track Toys}
- 2008 Subaru Impreza WRX STi {Modern Rally}
- 1998 Toyota Supra RZ
- 1963 Volkswagen Type 2 De Luxe
S1 Class
- 2014 Alfa Romeo 4C {Sports Cars}
- 2011 BMW 1 Series M Coupe {Super Saloons}
- 1981 BMW M1 {Retro Supercars} Added: 12/23/2014
- 1964 Chevrolet Impala SS 409 {Cult Classics} Added: 01/15/2015
- 2013 Donkervoort D8 GTO {Extreme Track Toys}
- 1967 Ferrari 330 P4 {Classic Racers}
- 1969 Ferrari Dino 246 GT {Rare Classics} Added: 12/18/2014
- 1985 Ford RS200 Evolution {Group B Monsters}
- 1993 Jaguar XJ220 {Retro Supercars} Added: 02/26/2015
- 1945 Jeep Willys MB {Offroad}
- 1982 Lancia 037 Stradale {Group B Monsters}
- 1997 Mazda RX-7 {JDM Icons}
- 1949 Mercury Coupe {Cult Classics}
- 1992 Mitsubishi Galant VR-4 {90s Rally} Added: 01/28/2015
- 1969 Pontiac GTO Judge {US Street Muscle}
- 2003 Renault Sport Clio V6 {Super Hot Hatch} AWD Added: 12/21/2014
- 2003 Renault Sport Clio V6 {Super Hot Hatch} RWD Added: 12/21/2014
- 1999 SRT(Dodge) SRT Viper GTS ACR {Retro Muscle}
- 2013 Subaru BRZ {Track Toys}
- 2008 Subaru Impreza WRX STi {Modern Rally}
- 2005 TVR Sagaris {Sports Cars}
- 2005 TVR Sagaris {Sports Cars} Light-Weight Version
- 1995 Volkswagen Corrado VR6 {Retro Hot Hatch} Added: 01/16/2015
- 2010 Volkswagen Golf R {Super Hot Hatch}
S2 Class
- 2014 Alfa Romeo 4C {Sports Cars}
- 2013 Audi R8 Coupé V10 plus 5.2 FSI Quattro {Modern Supercars} Added: 12/24/2014
- 1997 BMW M3 {Retro Saloons} Added: 12/09/2014
- 2013 Donkervoort D8 GTO {Extreme Track Toys} Stock Engine
- 2013 Donkervoort D8 GTO {Extreme Track Toys} Engine Swap
- 2009 Ferrari 458 Italia {Modern Supercars}
- 2009 Ferrari 458 Italia {Modern Supercars} Twin Turbo
- 2015 Ferrari 458 Speciale {Modern Supercars} Added: 02/18/2015
- 2009 Honda S2000 CR {Track Toys} Added: 12/13/2014
- 2010 Lexus LFA {Modern Supercars}
- 1957 Maserati 300 S {Classic Racers}
- 1961 Maserati Tipo 61 Birdcage {Classic Racers}
- 2011 Mercedes-Benz SLS AMG {Super GT}
- 2000 Nissan Silvia Spec-R (S15) {JDM Icons} Added: 01/26/2015
- 1999 SRT (Dodge) SRT Viper GTS ACR {Retro Muscle} Twin Turbo
- 2013 Subaru BRZ Track Toys {Stock Engine}
- 2013 Toyota GT86 Track Toys
- 2005 TVR Sagaris {Sports Cars}
X Class
- 2014 Alfa Romeo 4C {Sports Cars}
- 2013 Donkervoort D8 GTO
- 2013 Ferrari LaFerrari {Hypercars}
- 2010 Noble M600
Useful Links
- Physics of Racing Series (PhoRS) by Brian Beckman, PhD
- Race Car Suspension
- Ron Sutton’s 35 Years Experience
- Automobile Handling
- The Optimal Shift Point
- Gear Ratio Calculator
- Limited Slip Differential with 25% (stock) vs. 40%…pros/cons (IRL BMW Source)
- http://forums.forza.net/turn10_postst1050_Differential-settings.aspx
- Car Suspension Tuning Thanks PPiDrive!
- Engineering ToolBox
- Automotive Calculators
- The Dirt Forum Toolbox
- http://forums.forza.net/turn10_postst14462_Three-Minute-Tune.aspx
- http://forums.forza.net/turn10_postst6455_Universal-Tuning-System.aspx
- http://forums.forza.net/turn10_postst7220_Drows--Guide--For-Beginner-Tuner.aspx
- http://forums.forza.net/turn10_postst13959_Camber-Tuning-Techniques.aspx
- http://forums.forza.net/turn10_postst13698_Test-Track-Air-Field---Is-Actually-Very-Good-For-Quick-Tune-Build-Testing.aspx
- Tuning Guide
- A tuning experience
- Struggling trying to get rid of mid turn apex and corner exit oversteer need some help.
- When it comes to tuning I’m an idiot
- AWD hatchbacks need help
- Suspension setup flow chart
- Car Specs: Track-width, Wheelbase, Length, Height, Width, Power-bands, etc.*
- Automobile Catalog
- CarInf
- Super Cars
Quick Tune
Tires: F 29.0 | R 29.0
Final Drive: Dink with this if you want. Move it up and down and find the sweet spot that gives the fastest 0-100 time.
Camber: F -2.5 | R -2.5
Toe: F 0.0 | R 0.0
Caster: 5.7
Anti-roll bars: 40 * ( 1 - 0.62 ) = F 15.2 | R 15.2 (These will always be 15.2 )
Springs: Find the upper spring rate, 100% stiff. For example if it is 1218 then: 1218 * 0.62 = F 755 | R 755
Ride Height: If the car is uneven, even it out as close to 4.1 inches high. If your car can’t get as low as 4.1 inches, then 1 click from bottom.
Rebound:
RWD: F 5.1 | R 5.0
FWD or AWD: F 5.0 | R 5.1
Bump:
RWD: F 3.1 | R 3.0
FWD or AWD: F 3.0 | R 3.1
Aero: Full if you got it and want to stick to the road. Full front and no Rear if you want a bit more speed at the cost of grip.
Brake: 48%; Pressure: Whatever you want. I like to stop fast, so I use 150% to 200%.
Differential:
RWD: Ra 25 | Rd 10
FWD: Fa 80 | Fd 20
AWD: Fa 30 | Fd 0 | Ra 60 | Rd 17 | S 60
Offroad Starting Template
Build
- I like to use rally springs.
- You need to use race anti-roll bars & race differential.
- Buy Race tire compound or at least Sport. I don’t really like the rally compound I have not found a difference in the off-road normal landmass.
- Max Tire Width on rear tire.
- Tire radius should be around 15-18 (xxx/xxR17), or close to it. Unlike my street builds I like a little more air volume in my tires. So not max radius, a few steps left from furthest right.
- I like front and rear adjustable aero bumper and wing.
- I do not buy roll cage or chassis reinforcement.
- I like to drop as much weight as possible.
- Weight Reduction, I always go for race.
- Sometimes engine upgrades will get you more HP and Torque than a new engine. Sometimes that fancy new engine is heavy.
- I like to get a twin turbo if possible, it is lighter in weight, and I don’t always upgrade it. ( PTG Baby Cow suggests an upgraded centrifugal supercharger. I agree if you know how to tune your gears. )
- I like as much HP as possible, even if that means having stock brakes and street transmission.
- These items drop weight so I focus on them first.
- Exhaust ( Street, Sport, Race {Massive} )
- Air filter ( Sport & Race )
- Intake Manifold and Throttle ( Race )
- Pistons and Compression ( Sport and Race )
- Valves ( Race ) Usually only -1lbs
- Buy more engine stuff if you can before moving on to the rest of this list.
- Brakes, -4+ lbs per level.
- Driveline, can be substantial, -8+ lbs per level
- Clutch, will drop you -4+ lbs per level.
- Transmission. -3 lbs per level, and sometimes the Street transmission gives you PI.
- Flywheel, buy very, very, very, very last.
- These items can add weight so watch it. A good rule of thumb is if it adds 1HP for every 3lbs, then it makes up for the weight.
- Carborator ( Race only adds weight)
- Aspiration, Supercharger adds more weight than the Turbos. Sometimes it is better to go for Cams.
- Intercooler, I don’t use.
- Oil and Cooling, I don’t use.
Tune
Tires Pressure
F 26 / R 32 Thanks Tardii on the low pressure post. ( I’ve had good luck with the front also being 27…31 )
Gearing
Final drive: If possible highest acceleration with the fastest 0-100
Alignment
- Camber: F 0.0 / R 0.0
- Toe: F 0.0 / R 0.0
- Front Caster: 2.0
Anti-Roll Bars
F 25.00 / R 15.00
Springs
If you used Rally springs: - Drop them as far as they will go left.
- Raise either the front or the rear so that the rear are 50 lbs less than the front.
If you used race springs, then drop them as far as the will go left. The raise the front by 50 lbs.
Ride Height
Max, or middle if middle is above 7.
Damping
Rebound: F 1.5 / R 1.5
Bump: F 1.0 / R 1.0
( Thanks gtFOOTw for the tip )
Aero
Max if you got it.
Differential
FWD: 40 / 0
RWD: 25 / 10
AWD: 33 / 0 / 25 / 10 / 60
Notes
Remember this is a starting point. Modify as you see fit. - Check your rear tire pressure midway through the race. You’ll want it to be around 33.5
- If you find yourself over-steering too much (rear end sliding around after cornering and you don’t think braking is the corrective action):
- Decrease Rear anti-roll bar by 1 whole point and increase Front anti-roll bar by 1 whole point.
- Continue this process till you are happy, or you reach 35 Front and 5 Rear.
- You can go five more rounds but only decreasing the Rear 1 whole point.
- If you still aren’t happy, try bumping up the Front tire air PSI by 2 and then start this process over with ARBs at 25 Front, 15 Rear.
^. Remember though try to keep cold front tire PSI no higher than 28. But, there is always an exception to every rule, so try it out and see for yourself.
- If you find yourself under-steering too much ( you find yourself ending all your turns too early):
- Increase Rear anti-roll bar by 1 whole point and decrease Front anti-roll bar by 1 whole point.
- Continue this process till you are happy, or you reach 5 Front and 35 Rear.
- You can go five more rounds but only decreasing the Front 1 whole point.
- If you still aren’t happy, try bumping up the Front tire air PSI by 2 and then start this process over with ARBs at 25 Front, 15 Rear.
^. Remember though try to keep cold Front tire PSI no higher than 28. But, there is always an exception to every rule, so try it out and see for yourself.
Feedback is always welcome, even if it is to say you don’t like my style.