GT Pro Tune - The GT7 Tuning Calculator - Tune every car in Gran Turismo with this app!

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Ces la même photo a part que tu as moins zoomee
No it is not, you have uploaded the output adjustment screenshot.

You need to upload the ECU selection screenshot, the graph is in a different location.
 
We are working on graceful error handling, so that when an incorrect screenshot or a figure that looks out of place is entered the app will give you a heads up. This should help a lot hopefully!
 
Ok merci.
Avez vous un reglage pour la mercedes 190 E 2.5-16 evo 2 de 91 car j'ai essayé et il est inconduisible merci
Le Mans 700pp is the only race it’s okay for, good top end speed!

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Edit: Is the subscription a one time charge or reoccurring? How do you cancel if reoccurring?
Welcome, I’m not sure where you’ve seen subscription?

The app itself is not subscription, there are features due to be released in the coming days with the new update that will be a small subscription fee specifically for AI tuning advice.
 
Suggestion: When using the Tire Size calculator it asks for the top speed in KPH. My units are MPH. I would suggest changing that to reflect the user's units.

Issue: I am working on the 2002 Viper GTS. When allowing the app to calculate the rear downforce it gives a value of 56. I have the front downforce as 60. The lowest the rear downforce can go is 120.

Second issue is the gears that it calculates don't work out. I input a top speed of 265 MPH with six gears and some of the suggested ratios cannot be set with how I have the car upgraded now.

Max Power = 651 HP
Min RPM = 1400
Max RPM = 7423
Gear Ratio Adjuster = 80%
RPM @ Max Power = 5800
Max Torque = 611
Top Speed = 265
Number of Gears = 6

Calculation:
Gear -- Ratio
1 -- 6.295 -- input range is 2.024 to 3.900
2 --3.935 -- input range is 1.501 to 2.976
3 -- 2.460 -- input range is 1.138 to 1.988
4 -- 1.538 -- input range is 0.906 to 1.445
5 -- 0.961 -- can be set
6 -- 0.601 -- can be set but gives a top speed that can't be reached
Final -- 3.590

As a novice, I do not understand what is happening here.
 
Suggestion: When using the Tire Size calculator it asks for the top speed in KPH. My units are MPH. I would suggest changing that to reflect the user's units.

Issue: I am working on the 2002 Viper GTS. When allowing the app to calculate the rear downforce it gives a value of 56. I have the front downforce as 60. The lowest the rear downforce can go is 120.

Second issue is the gears that it calculates don't work out. I input a top speed of 265 MPH with six gears and some of the suggested ratios cannot be set with how I have the car upgraded now.

Max Power = 651 HP
Min RPM = 1400
Max RPM = 7423
Gear Ratio Adjuster = 80%
RPM @ Max Power = 5800
Max Torque = 611
Top Speed = 265
Number of Gears = 6

Calculation:
Gear -- Ratio
1 -- 6.295 -- input range is 2.024 to 3.900
2 --3.935 -- input range is 1.501 to 2.976
3 -- 2.460 -- input range is 1.138 to 1.988
4 -- 1.538 -- input range is 0.906 to 1.445
5 -- 0.961 -- can be set
6 -- 0.601 -- can be set but gives a top speed that can't be reached
Final -- 3.590

As a novice, I do not understand what is happening here.
Hey, normal first time user issues, we are working on an up date to make it simpler to use.

For now though send me the screenshots of everything you entered into the app along with the car setup screenshot and I’ll point out where you have entered incorrectly
 
Hey, normal first time user issues, we are working on an up date to make it simpler to use.

For now though send me the screenshots of everything you entered into the app along with the car setup screenshot and I’ll point out where you have entered incorrectly
I sent the images via direct message. Thank you for the assistance.
 
I sent the images via direct message. Thank you for the assistance.

Hi,

I think what happened is you maybe have calculated the wrong tyre size as the first problem. The tyre size calculator has its speed specifically in KMH because that’s the unit the game always uses in the transmission screen (despite the users region settings).

So for ease enter these values in the tyre size calculator:
IMG_2103.webp


Try that and then see how is works. Come back to me and we can see if there are any other issues.
 
That is what I entered. I followed your YouTube guide while entering values. I did it again just to be certain and got the same result,25.87 inches.

Screenshot 2025-11-29 085131.webp
 
That is what I entered. I followed your YouTube guide while entering values. I did it again just to be certain and got the same result,25.87 inches.

Okay not that then. I see your using the lite version, which needs a little more tweaking to get the right gear ratios.

See below;

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Okay not that then. I see your using the lite version, which needs a little more tweaking to get the right gear ratios.

I would upgrade but do not see a way to do so. When I click on Manage Profile it just tells me what my subscription information is. How would I upgrade and do I receive any credit for having the lite version?
 
I would upgrade but do not see a way to do so. When I click on Manage Profile it just tells me what my subscription information is. How would I upgrade and do I receive any credit for having the lite version?

Upgrade link sent via PM
 
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