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Mazda 787B ’91 Top Speed Tune Gran Turismo 7


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This GT7 tuning guide takes you through how to build the Mazda 787B ’91 Top Speed Tune. We list the parts and tuning need to make this 1480HP Beast!

Vehicle History

The Mazda 787B was released in 1991 by Japanese Car Manufacturer Mazda as a modification of the original 787.

They were produced for use in various racing championships, most notably the 24 Hours of Le Mans.

Powered by a Wankel rotary engine, the 787B was the last Wankel powered race car to compete in Japanese and world racing championships.

Only three of these cars exist today.

Like super cars? Check out our latest Aventador Best Speed Tune.

Car Specs

This baby has a standard max power of 989 ponies combined with 577lbs of raw torque. Try out the tune below and tell us what you think.

  • Max Power: 989HP
  • Max Torque: 577lb
  • Displacement: 654×4 cc

Car Parts

No car parts have been added to this tune. It just used the stock car with some tweaking done to the car settings. Its a great top speed build for oval shaped tracks.

Mazda 787B ’91 Top Speed Tune – Car Settings

Copy the car settings below and make sure to mess around with them yourself if you think it needs tweaking. This is a great beginner build for people who just got the Mazda.

Please let us know in the comment section below what changes you’d make if any.


  • Front: Heavy Wet Racing
  • Rear: Soft Racing


  • Body Height Adjustment: 58:63
  • Anti-Roll Bar: 7:7
  • Damping Ratio(Compression):  28:28
  • Damping Ratio(Expansion): 41:41
  • Natural Frequency: 5.00:4.80
  • Negative Camber Angle: 2.8:2.2
  • Toe Angle: 0.06:0.14

Differential Gear

  • Differential: Fully Custom
  • Initial Torque: 0:20
  • Acceleration Sensitivity: 0:40
  • Braking Sensitivity: 0:50
  • Torque-Vectoring Centre Differential: None
  • Front/Rear Torque Distribution: 0:100


  • Downforce: Front: 500 Rear: 1000


  • ECU: Full Control Computer
  • Output Adjustment: 100

Performance Adjustment

  • Ballast: 0
  • Ballast Positioning: 0
  • Power Restrictor: 100


  • Transmission: Fully Custom Racing
  • Top Speed: 250

Transmission Manual Adjustment

  • 1st: 3.436
  • 2nd: 2.462
  • 3rd: 1.787
  • 4th: 1.341
  • 5th: 1.047
  • Final: 2.496


  • Nitro Overtake: Nitro
  • Output Adjustment: 50


  • Turbocharger: High RPM


This tune was originally made by JohnnySDVR. Check out his awesome Gran Turismo tuning guides on YT some time.

We’ve tons more tunes GT7 Tunes so make sure to have a look around our site for more. We know you’ll love them.

2 thoughts on “Mazda 787B ’91 Top Speed Tune Gran Turismo 7”

    1. Hey man, thanks for making your tunes. I love them which you probably already know lol. I always leave you credit in the post. I leave a link back to your channel and sometimes to the video also. This is great for your videos too. The more links that point to them the better 🙂

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