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Geek Culture / Gran Turismo 4: Tuning Cars

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Matt Rock
19
Years of Service
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Joined: 5th Mar 2005
Location: Binghamton NY USA
Posted: 19th Jul 2007 22:53
Okay, I give up. I've searched "the Google" for almost two hours yesterday trying to find a resolution to my GT4 problem, and I've been left with no alternative but to come to TGC and hope that someone from these forums plays GT4 and can help me solve this little gaming dilemma. Please, don't make this into some anti-Sony thread .

Okay, here's the issue: I have a 2005 Ford Mustang GT. After modding and tuning the car, I've got it pumping out 665 HP and banking 212 MPH top speed on the test track. But I'm burning out straight into fourth gear, and when I brake I'm chirping down through all six gears to a very uneven, dirty stop (very bouncy stops). Here is a list of my mods and how I've got it tuned:

Mods: racing chip, racing exhaust, NA Tuning stage 3, tires are S2/S2, triple-plate clutch, racing flywheel, and all other top-level mods.

- Tuning - (front/rear)

[Aids/ Downforce/ Ballasts]


[Suspension]


[Gear Ratios]

^ Yes, I know that my arch for 6th gear is massive, I like having headway to gain speed on longer maps and quick acceleration on shorter maps.

[Limited Slip Differential]
Initial Torque = 10
Acceleration = 24
Deceleration = 18

I get the same burn-out with several of my high-power cars, including the GT40 and Aston Martin V12 Vanquish. I assume it has to be something wrong with the way I'm tuning the cars. I did an internet search and tried tuning solutions that people said, but none of them are even remotely helpful (people tune cars for specific maps, I don't). This traction loss is really making me angry... I don't want to chalk up this Mustang as a $150,000 loss

TEST OF WILL
17
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Joined: 23rd May 2007
Location:
Posted: 19th Jul 2007 22:59
I prefer Burnout
Krilik
18
Years of Service
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Joined: 16th Mar 2006
Location: Arizona, USA
Posted: 20th Jul 2007 06:55 Edited at: 20th Jul 2007 11:04
I play it, but I don't drive a Mustang very often to have fined tuned it to work well.

I'll give it a whirl with the parts and tuning you have sometime tonight.

EDIT:

Well with the current settings that you have, the best thing you can do to remove burning out for so long is increasing your 1st gear ratio to a really high level, and then lowering your 2nd and 3rd gear depending on how fast you want to accelerate. You also should be using Super Soft Racing tires since they allow for more traction, which provided a notable difference without changing your settings. Last thing I can suggest is, if you're not manual shifting, you should. You can gain more traction just by shifting up a gear when your tires start burning out. I can usually get 1 or 2 seconds faster acceleration by doing this.

Your braking problem is a pretty easy fix. You can either lower your ride and descrease all your shock settings, or incease your shock settings. This really depends on the courses you're going to drive on too. But what you should really do with what you currently have is increase the bound, and decrease your rebound, and just increase the spring rate by a couple of mm. You'll stop the bounce effect, but you will notice loose handling even when straight braking. You can probably fix that with ABS, but I normally drive without driving aids.
Fallout
22
Years of Service
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Joined: 1st Sep 2002
Location: Basingstoke, England
Posted: 20th Jul 2007 11:59
Quote: "I assume it has to be something wrong with the way I'm tuning the cars."


To he honest, I've not played the game, but to me it sounds like a problem with the game! I've not known anyone in real life light up the tyres, and change up 3 gears to avoid wheel spin.

Maybe I don't understand the problem, but surely if you're burning out straight into 4th you just go easier on the throttle? In real life you don't bury the throttle on 600bhp cars and expect to have any sort of control. Obviously in the computer game world, when you redline, they automatically shift up, so in GT4 it shifts you up 3 gears. As you redline, redline again, redline again in quick succession.

So again, I don't know the game, but I'd say drop the lead foot and actually apply throttle gradually. Gear ratio is the only other thing I can think of. Don't know about the braking issue though.


GatorHex
19
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Joined: 5th Apr 2005
Location: Gunchester, UK
Posted: 20th Jul 2007 13:05
It's been a while since i played GT

Getting all the Race Spec weight reductions works well.

I never go for the best flywheel/gears because they reduce top speed in favor of acceleration, so i prefer a balanced product.

I'm not clever enough to custom setup specs

DinoHunter (still no nVidia compo voucher!), CPU/GPU Benchmark, DarkFish Encryption DLL, War MMOG (WIP), 3D Model Viewer
Matt Rock
19
Years of Service
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Joined: 5th Mar 2005
Location: Binghamton NY USA
Posted: 21st Jul 2007 01:42
Quote: "the best thing you can do to remove burning out for so long is increasing your 1st gear ratio to a really high level, and then lowering your 2nd and 3rd gear depending on how fast you want to accelerate."

Tried that, it isn't seeming to help unfortunately. I do shift manually (automatic transmissions are too dull for my liking). I can't tell but I think I'm gaining speed through fourth gear, but I'm still burning until I get there, so it's like I'm getting more traction but my spin indicator is flashing off the charts. I can't use the racing softs either because I'm using this car for the Supercar series in the Professional area and several of the American races as well.

Speaking of which, what car do you guys use on the American races? Maybe I should use something else. I want to find an American car that can muscle up to 500+ HP without getting this horrendous tire-burning, so I can use it for the American races and the Supercar challenge as well.

Quote: "surely if you're burning out straight into 4th you just go easier on the throttle? In real life you don't bury the throttle on 600bhp cars and expect to have any sort of control."

I'm not burning out and standing still. I'm moving forward and gaining speed while I'm burning out (up to around 120 MPH or so), but until I get to fourth gear I'm extremely unstable and turning is downright treacherous. But that's actually a really good point... I'm just jamming the throttle and hoping to not burn out for too long, and I'm doing that in every car I have. I should try it without flooring it... thank god for analog sticks, I couldn't manage that with the X button, lol.

Quote: "I'm not clever enough to custom setup specs"

hehe neither am I, and yet still I try regardless of how badly I'm murdering my cars . In real life I'd probably be blowing these engines regardless of their rev limiters (governors).

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