Forza Motorsport 8 - How to Increase PI (Performance Index)

A guide on how to increase PI (Performance Index) in Forza Motorsport 8 (2023), including the best ways to raise your car's overall rating (speed, handling, acceleration, launch, and braking) and other useful tips.

Forza Motorsport 8 - How to Increase PI (Performance Index)

How to Increase PI (Performance Index) in Forza Motorsport 8

Ways to Raise Overall Car Performance

Attach new parts (Performance > Upgrade Shop).

One of the easiest ways to increase your car’s PI (Performance Index) is to purchase and equip new parts for your vehicle using Car Points (CP). Adopting different setups for your car’s fuel and air system, engine, and tires all greatly affect your car’s performance so try experimenting with all parts to increase PI.

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Swap out the engine (Performance > Upgrade Shop).

The Engine Swap upgrade (unlocked at car level 40) is also among the most direct ways of granting your car increased horsepower (HP), which may result in a higher PI value. Note that you may need to tune your car afterwards as the greater HP may also negatively impact your car’s handling.

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Convert to a different drivetrain (Performance > Upgrade Shop).

The Drivetrain Swap upgrade (unlocked at car level 50), meanwhile, drastically changes the overall behavior of your car by converting it to either all-wheel drive (AWD), front-wheel drive (FWD), or rear-wheel drive (RWD). This process comes with other major changes to your vehicle such as an entirely different weight distribution and acceleration.

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Tune different parts of your car (Tuning > Tune Setup).

Tweaking various settings of parts you have installed on your car may also improve its performance. Tuning allows you to adjust your car’s tires, gearing, alignment, springs, and other options to compensate for drawbacks innate to your vehicle or brought about by modifying it through upgrades.

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Bear in mind that some tuning options may require you to install specific parts before you can adjust them under Tune Setup. You will not be able to access and modify these options with only stock parts.

You can also adjust various parameters under Differential Tuning if you are using a sport or racing differential setup. Differential tuning largely depends on your car’s drivetrain as you will be able to adjust how the car’s driven wheels (front or rear wheels receiving power from the engine) work together during acceleration and deceleration.

Forza Motorsport 8 Differential Tuning Guide

Use Quick Build feature when starting out.

Beginners and new players might be overwhelmed with the variety of parts and tuning options available to them when going to the Upgrade Shop or Tune Setup for the first time.

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In these cases, it is recommended to use the Quick Build option let the game choose upgrades for your car automatically based on unlocked parts and available CP. The resulting setup can then be used as a starting point, allowing first-time players work their way into more intricate aspects of their car later on.

Increasing PI requires CP.

As all upgrades require CP, you will need to farm the resource throughout the game to increase your car’s PI. To earn CP, you simply need to level up your car during Career Mode races (including Practice sessions), Free Play, and other events.

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You will gain 100 CP to 250 CP every time your car levels up in the game. At car level 50 (max level), you will have a total of 20,000 CP to spend on all unlocked upgrades at the Upgrade Shop.

Each car starts out with 300 CP, allowing you to apply minor enhancements immediately after acquiring a new vehicle in the game.

What is PI?

PI stands for Performance Index and is a numerical value that determines a car’s overall performance by taking into account the vehicle’s speed, handling, acceleration, launch, and braking. PI can be seen as a quick way to know how well a car runs and handles on a simulated track.

Cars are grouped into classes based on their PI as a way to have vehicles of similar performance compete fairly across different racing events. This is to prevent cars with a significant disadvantage in speed, acceleration, and overall handling from racing against cars that are objectively better in every regard by unfair margins.

Forza Motorsport 8 Car Class List and Guide

Other Forza Motorsport 8 Guides

Forza Motorsport 8 Basic Information

▼Forza Motorsport 8 Basic Information
Game Editions Is the Game Coming to PS5?
Does the Game Have Cross-Play and Cross-Save? Do You Need Online Connection to Play?
Supported Steering Wheels and Peripherals Accessibility Support
PC System Requirements PC Exclusive Features
Game Controls Game Difficulty
Is the AE86 Trueno in the Game?

Forza Motorsport 8 Game Guides

Best Cars Rankings

▼Forza Motorsport 8 Best Cars Rankings
Best Starting Car to Choose Best Cars by PI (Performance Index)
Fastest Cars by HP (Horsepower) Best Cars for Drifting

Game Modes Guides

▼Forza Motorsport 8 Game Modes Guides
Career Mode Guide Rivals Mode Guide

Career Mode Event Guides

▼Forza Motorsport 8 Event Guides
Featured Tour Schedules and Rewards Featured Multiplayer Events and Schedules
Featured Rival Events and Schedules VIP Events and Schedules

Useful Guides

▼Forza Motorsport 8 Useful Guides
All Achievements List (Xbox and Steam) All Cars List
All Unlockable Cars All Limited-Time Cars
Best Starting Car to Choose Best Upgrades
Tips for Beginners Should You Get VIP Membership?
How to Level Up Cars Fast Money Farming Guide
How to Farm Car Points (CP) How to Increase PI (Performance Index)
Car Pass Rewards List All Car Upgrades List
All Tracks List Differential Tuning Guide
Pitting Guide Tires Guide
How to Tune Cars How to Increase Horsepower (HP)
How to Reduce Car Body Weight Weight Reduction vs. Horsepower Increase
How to Drift How to Sell Cars
Car Class List and Guide How to Get Car Discounts
How to Change Driver Suit All Driver Suits List
How to Unlock Engine Swap How to Unlock Drivetrain Swap
How to Change Language How to Change License Plate
How to Enable Leaderboard in HUD Is Slipstream Effect in the Game?
How to Skip Practice Time of Day and Weather Effects Guide
Photo Mode Guide Car Design and Paint Guide
How to Share Car Designs

Forza Motorsport 8 Cars List

By Manufacturer

▼Forza Motorsport 8 Cars List (Manufacturers)
Acrua Alfa Romeo
Alpine AMC
Apollo Ariel
Aston Martin Audi
Austin-Healey Automobili Pininfarina
Auto Union BAC
Bentley BMW
Brabham Bugatti
Buick Cadillac
Caterham Chaparral
Chevrolet Chrysler
Datsun Dodge
Donkervoort DS Automobiles
Eagle Exomotive
Ferrari Ford
Ginetta Holden
Honda HSV
Hyundai Infiniti
Jaguar Koenigsegg
KTM Lamborghini
Lexus Lola
Lotus Lynk & Co
Maserati Mazda
McLaren Mercedes
Mercury Merkur
Mitsubishi NIO
Nissan Oldsmobile
Opel Pagani
Peugeot Plymouth
Pontiac Porsche
Radical RAESR
Renault Rimac
Saleen Shelby
Subaru Toyota
TVR Ultima Sports
Vauxhall Volkswagen
Volvo VUHL
Xpeng Zenvo
Forza Motorsport 8 All Cars List

By Division

▼Forza Motorsport 8 Cars List (Division)
Early Factory Racecars Early LMP Cars
Early Sport Compact Cars Exotic GT Classics Cars
Formula 60s Cars Formula 70s Cars
Formula Mazda Spec Cars Forza GT Cars
Forza P1 Cars Forza P2
Forza Proto-H Cars Forza Touring Cars
GTP/C Cars GTX Sportscars
Hot Hatch Icons Cars Mission R Spec Cars
Modern Exotic GT Cars Modern Factory Racecars
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Modern Sport GT Cars Modern Sport Touring Cars
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