Tune It Yourself - User Guide
TRY IT / BUY IT / LICENSING
When you first install Tune It Yourself, you will be prompted with the option to "Try It" or "Buy It".
The "Try It" option puts the app into DEMO MODE. Demo mode allows you to give the app a try without purchasing a subscription. In demo mode, vehicle tuning is limited to the Radical SR8 (for Forza Motorsport 7), the Skyline GT-R VSPEC (for Forza Horizon 4) or the 1992 Ford Escort RS Cosworth (Forza Horizon 5) which you can tune on any circuit. Co-driver mode and Tuning In A Nutshell is not available in this mode.
The "Buy It" option lets you to purchase a subscription to the full Tune It Yourself app and all its features. You will be able to tune any car available to you in the game and will also gain access to the Co-driver mode and Tuning In A Nutshell page.
If you have an existing subscription to Tune It Yourself but have reinstalled the app, choose the "Buy It" option and click the "Restore Purchases" option to link your existing previous subscription with the reinstalled app.
The main menu of Tune It Yourself is shown on the left. Each option in the menu is documented in more detail below. In summary,
New Tune - this option is used to create a brand new tune for a specific vehicle and track combination.
Load Tune - this option to used to load a previously saved tune. You can then continue the tuning process if it has not yet been completed or you can view the optimised final tune.
Co-driver - this option brings up the Co-driver feature providing a simple HUD and monitoring your driving performance alerting you when you are over driving the ccar.
Tuning In A Nutshell - this option gives you a breakdown of the theory and components of tuning to help you better understand how the vehicle tuning process works.
Setup and Test Connection - this option provides you with a guide to setup the link with Forza Motorsport 7, Forza Horizon 4 or Forza Horizon 5 and a way to test that the link is working.
When starting a fresh tune, you’ll need to give it a name and enter some basic vehicle information. It is recommended that you include both the vehicle and track in the name, making it easier to isolate specific tunes should you wish to return to them later. Expect different results for the same car on different circuits.
The vehicle weight and front weight distribution values can be found from either the “Select Car” or “Upgrades” screens in Forza.
Minimum and maximum ride heights for both front and rear can be found from the “Springs” tab in the “Tune” menu of Forza. Move the ride-height sliders to both their minimum and maximum values and enter the figures here.
The adjustable aero installed option tells the app whether or not the vehicle you are tuning has adjustable aero properties in the setup. Turn this on if you are able to adjust the front and rear aero levels in the game, or disable it if you do not have this option. If this option is enabled then you will need to enter the minimum and maximum aero values for the both front and rear which can be found from the “Aero” tab in the “Tune” menu of Forza. Move the aero sliders to both their minimum and maximum values and enter the figures here.
Please note: Vast amounts of information are required for a successful setup, however unlike other tuning calculators, Tune It Yourself will collect ALL other required information during the “Vehicle Check” test drive. This results in incredibly accurate setups all while saving you time!
TUNE IT YOURSELF REMEMBERS YOUR PROGRESS THROUGH THE FOLLOWING TUNING STAGES AND WILL RETURN TO YOUR MOST RECENT STAGE OF TUNING IF YOU’VE EITHER NOT YET FINISHED OR YOU'RE LOADING A PREVIOUSLY SAVED TUNE.
The vehicle check process allows the app to gather all the other required vehicle information from the telemetry provided by the game.
Please ensure you have completed the setup to link Forza with Tune It Yourself before attempting to perform the vehicle check. Instructions can be found in our Tune It Yourself - Setup Guide section or by using the "Setup and Test Connection" option on the main menu.
During this stage you are required to take your car for a short drive so we can collect additional vehicle data. Follow the on-screen instructions until all boxes are checked with a tick.
Gears Counted - make sure you change up through every gear
Rev Limiter Detected - make sure you let the car hit the rev limiter for a few seconds, it is easiest to do this in the first couple of gears. Hold it on the limiter until the tick appears.
Lift and Coast - Accelerate up to approximately 60 mph (100 kph) then release the throttle completely and coast in a straight line for approximately 5-10 seconds until the tick appears. The lift and coast detection only occurs at speeds between 20-60 mph (30-100 kph).
Click “Done” when complete.
Here you can see the progress of your current tune.
Click the blue “Tune Chassis” or “Tune Gears” icon to begin automatic tuning for that section. The current status of each section is shown above the icon (ie Not Started, In Progress or Optimised)
Chassis tuning in a three stage process (ride height, suspension and braking).
Gearing in a single stage process aimed to optimise the speed that can be achieved on the circuit you are tuning for.
IMPORTANT: WHEN TUNING, DO NOT PAUSE OR REWIND THE GAME DURING THE TESTS. SHOULD YOU CRASH OR COME OFF THE TRACK, CLICK CANCEL AND RESTART THE TEST. NOTE:. DATA IS COLLECTED FROM YOUR FASTEST LAP ONLY, SO FOLLOWING A CRASH YOU CAN ALTERNATIVELY KEEP RACING - JUST MAKE SURE YOUR FASTEST LAP IS A CLEAN ONE!
The base tune values which have been calculated based on your initial test run are now displayed. Enter them into your vehicle’s setup in-game.
IMPORTANT: On rare occasions, the base tune figures for suspension may be outside a usable range. Click the “Unable to use results” button and select whether the setup is too stiff (ie the tune values are higher than the game will allow) or too soft (ie the values are lower than the game will alow). The base tune figures will be amended accordingly.
The START VEHICLE ANALYSIS button commence chassis tuning. There are three stages to tuning the chassis which the app will get you to complete in sequence. Ride Height, Suspension and Braking.
Step one ensures the ride height is correct. Set your lap count to 1 and click “Start Vehicle Analysis” to begin ride height automation. Click on “Start Race” in-game and go do your lap. This should only take one or two runs but repeat as necessary until the ride height is optimised. You can skip this section and move directly to the Suspension Analysis section, although it is not recommended that you skip any stages.
Increase the lap count to between 2 and 5 laps before you begin. Remember, data is only used from your fastest lap. More laps takes longer, but warmer tires = more accurate results.
After completing your laps, you will be asked to make some changes to your setup (unless it’s already optimised). Enter the new figures and repeat testing until an optimal setup is found. This generally takes 2-3 runs to complete.
Once complete, click “Continue to Brake Analysis”. If you don’t have race brakes installed, click “Tune Complete”.
Set your lap count to 2 and follow the on-screen instructions to tune your braking performance. Please ensure that you apply hard braking in the appropriate braking zones of the track. Minor brake locking is actually desirable for the tuning process. This process can usually be optimised fairly quickly if consistent braking techniques are used between test runs.
You’ll be asked to complete a lap of the circuit where you are able to maximise your speed on the longest straight.
Upon doing so the recommended gear ratios are displayed as shown on the right.
Many cars with a high number of gears often perform better using less of them (providing they’re geared correctly). If you wish to experiment with less gears, change the required amount from the available "Optimise for # Gears" drop down list and the ratios will update accordingly.
Test your chosen number of gears on track before completing this section. They cannot be amended afterwards.
This process rarely takes more than 2 runs.
Here you will find all of your saved tunes whether they’re optimised or not. There is a ton of space so don’t worry about how many tunes you have saved. To load a tune, simply click the name. Should you ever wish to clear some out, hold down your finger on the desired tune (for Android users) or swipe left (for iOS users) and select delete. This cannot be undone.
TUNING IN A NUTSHELL
It is important to have a good understanding about how car suspension works, so we’ve included a written guide to tuning. You may even learn something to help alter your tune a little more to your taste. We highly recommend you read this section as many of your tuning questions will be answered here.
The Co-driver page offers the user a simple HUD (speed, gear, current and previous lap time) with one unique feature, a driving analyser which provides a red alert when the app has detected that you are attempting to drive the vehicle past its limits.
The background will flash red if it detects that you are over driving the car. This will help you learn to drive to car to its limits but not over them, therefore improving your lap times.
SETUP AND TEST CONNECTION
The setup and test connection option on the main menu can be used to ensure you have correctly configured the connection to Forza Motorsport 7, Forza Horizon 4 or Forza Horizon 5 and that the connection is working as required. Instructions for configuring the connection are shown in the app on this page and can also be found on the Tune It Yourself - Setup Guide page.