Formula Gran Turismo (w/ Chassis Reinforcement*)
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I have been working on fine tuning the car so I could actually complete the Formula Gran Turismo A-spec event. This tune is provided with multiple sub-configurations for dampers, stabilizers, and tires depending upon the track being raced. I will also continue to update the tune with further track specifics as they become available. If you find other tweaks that can be applied to this tune to account for a specific track, weather condition, or driving input device, then please feel welcome to leave feedback and I will evaluate your additions and contribute sub-tune credits where necessary.
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Purchases:
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+ GT Auto Engine Overhaul
+ GT Auto Chassis Maintenance
+ Chassis Reinforcement (a)
+ Race Medium Tires
+ Race Soft Tires
Core Setup:
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Aerodynamics @ 70 / 90
Power Limiter @ 900HP (for consistency; optional)
Limited Slip Differential
@ Initial: 19
@ Acceleration: 60
@ Braking: 13
Transmission @ 242 MPH
Fully Customizable Suspension (b)
@ Ride Height: 0 / 0
@ Spring Rate: 17.6 / 17.6
@ Extension: 8 / 8
@ Compression: 8 / 8
@ Anti-Roll Bars: 5 / 5
@ Camber: 1.8 / 1.0
@ Toe: 0.00 / 0.00
Brake Controller @ 5 / 5
Tires: Race Hard/Medium/Soft/Intermediate/Rain (c)
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Notes:
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(a) Tune(s) may work without Chassis Reinforcement installed but I have not verified it. Since it is a used race car purchase, the chassis maintenance service at GT Auto is also highly recommended.
Drivers often get the wrong impression about the chassis reinforcement upgrade and the changes in handling they experience afterwards. The resulting differences in handling are triggered by a change in the underlying suspension physics equation. When you strengthen the rigidity of the chassis you make it more resistant to torsion forces, this requires some softening of the suspension, but once these changes are made lap times generally decrease by 1-3% across most courses.
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(b) Also, updated to note you can adjust the stabilizers depending on the track. The courses with flatter cornering benefits from lower settings, 4 / 4 or 5 / 5, and the more technical courses can benefit from 6 / 6. Adjust to suite your taste, but I have included my preferences and results on some courses below. If you choose to use stabilizers 4 / 4 then you need to lower compression to 7. So the following should be the three recommended setups, with dampers 8 and stabilizers 5 being a good median for all courses. DS3 times without corner cuts and the only aid of ABS=1 accompany each setup as used.
Dry Setup A:
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@ Extension: 8 / 8
@ Compression: 7 / 7
@ Anti-Roll Bars: 4 / 4
- Cote D' Azur w/ Race Medium - 1:21"
- Fuji Speedway F w/ Race Hard - 1:17"
- Indy Road Course w/ Race Soft - 1:13"
- Monza (Dry) w/ Race Hard - 1:25"
Dry Setup B:
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@ Extension: 8 / 8
@ Compression: 8 / 8
@ Anti-Roll Bars: 5 / 5
- Cote D' Azur w/ Race Medium - 1:20"
- Suzuka Circuit (Dry) w/ Race Medium - 1:36"
- Tokyo R246 w/ Race Hard - 1:16"
Dry Setup C:
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@ Extension: 8 / 8
@ Compression: 8 / 8
@ Anti-Roll Bars: 6 / 6
- Cote D' Azur w/ Race Hard - 1:19"
- Nurburgring GP/F w/ Race Hard - 1:34"
- Tokyo R246 w/ Race Hard - 1:15"
Wet Setup: (f)
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@ Extension: 4 / 4
@ Compression: 4 / 4
@ Anti-Roll Bars: 2 / 2
@ Camber: 4.5 / 2.5
- Monza (Wet) w/ Race Intermediate (FR) & Race Medium (RR) - 1:36"
- Suzuka (Wet) w/ Race Intermediate (FR) & Race Medium (RR) - 1:56"
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(c) Choosing the right tires for each event is as important as choosing the right option from the suspension options above. Each tire has a distinguishing effect on the handling and often is the case that the Race Hard or Race Medium could post faster and more consistent lap times over those attempted with Race Soft equipped. Consider the available options a matrix of nine; three suspension damper and stabilizer pairings multiplied by three tire options, each with its own unique feel per course. I have attempted to identify the combinations of setups that best suite my driving style and have provided lap times in the section above.
The Race Soft tires can have detrimental effects on handling for some courses. There are two factors at play, extreme grip, and extreme heat generated by the grip. Some of the negative effects come from too much grip reducing turn radiuses until they are too tight and the car actually slows instead of making a fast sweeping turn through the corner as it should. The other factor also has to do with the grip and the resulting heat generated. The game's tire temperature modeling can overload the tire by generating heat through friction at a greater rate than it can be dissipated under some circumstances with Race Soft tires equipped to the extremely high powered and light weight cars featured in the game. These cars being so light and aggressive can overload the tire with constant friction, especially on highly technical courses; the hot Race Softs can not dissipate the heat fast enough and lose grip faster. As a result, I can typically run much more consistent lap times and achieve faster best lap times on Race Hards/Mediums over Race Softs in many instances with the Formula Gran Turismo; so if you are having problems with Race Softs on a particular course try switching down to Mediums or Hards. Zeroing out the toe helped also; I see some tunes adding more but I think the car runs best with none at all.
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(d) As mentioned by Adrenaline in a reply to this tune, some drivers, those highly skilled with DS3 or driving with a wheel may benefit from having their gearboxes set one or two settings of the top speed slider higher than my generic 242 MPH setup.
I could spend the time setting up the gearbox for every course, but there is always going to be differences in driver skill level that are too divergent with an extreme car to make a one suites all gearbox setup. I know my exit speed from the final corner on Fuji Speedway F is probably going to below average because I suck on it.
The benefits of a custom gearbox are probably going to be less than the average error or margin for time loss due to driver errors so I'm not going to get too specific with it. I like the 242 MPH as a generic setup, but just as that. You may benefit from having it one or two, perhaps three, auto top speed slider presets above the 242 MPH mark.
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(e) Further more, I do use DS3 so wheel users may set better times than the ones I have supplied with the same setups. Wheel users may also prefer a touch more oversteer so you can try adding .1 increments to the front camber until you are satisfied with handling. Wheel users may also like some minimal toe, especially on the slow corners like Indy Road Course; start with an setting like -0.10 F / -0.10 R and if there is too much oversteer with that, take the front down in .01 increments (ie. -0.09/+0.10). I don't know which settings work best for wheel users so if you try these tweaks and find some that work please leave feedback and I will give you a tuner assistance credit in post.
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(f) Suspension tweaks and setup for rain at Monza and Suzuka include softening the dampers, anti-roll bars, and increasing the camber. You still need to be a little gentler than usual on the throttle than with the dry conditions, especially around the south tip at Monza, and in the final chicanes at Suzuka. The tires will warm up and be a little more consistent after the first two laps. You can run the times I have indicated fairly easily if you don't push the car too hard and do them repeatedly.
Race Soft adds more grip to the rear, but in a long race, the tires may begin to overheat, Medium tends to fair better and is a good balance with the Race Intermediate tire equipped up front. The Race Intermediate tire tends to show the best use up front for cornering and braking on wet conditions. I did not find an opportunity during my testing that the Rain tire showed any advantage, it was a disadvantage in light to medium rain conditions, though if heavy rain conditions do appear you can try equipping one up front and switch to a Race Soft in the back.
If you are B-specing you need to babysit Bob because he'll want to switch to those darn Intermediate and Rain tires on the rear of the car every lap. I figure you already know where the pit indicator light is and how to tell him to cancel his pit stop.
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