I haven't been using this car that much lately, in fact I've mostly been driving cars in the 300 - 400 hp range where I feel a little more in control. But
TuneRVisioN ofered some settings and I wanted to try them out. They're working pretty well for me. I did my testing in the Pro League GT World Championship, against cars like the 787B, the R-390, and the GT-one. I raced ten laps on the Special Stage Route 5 (reverse) course, because it has some tight turns, and that's where I was having the most trouble.
I didn't make all the changes at once. I wanted to change a few things and see if I could tell the difference. I started out with my old settings, but I turned off TCS (I never use ASM and I'm trying to stop using TCS too). I started on T5's and I'm at 796 hp (stage 2 turbo).
First run was a disaster, but mainly because I haven't been on this course in a while. The main problem I had with the car was that the tires just lit up in 2nd, 3rd and sometimes even 4th gear. I was trying to be light on the joystick, but I just seemed to be giving it too much gas coming out of turns. Result was that I got sideways a lot, and in one case the AI gave me a good nudge and I did a cool 540 degree spin.
Second run I changed all the suspension settings. It's a large number of things to change, but most of the settings were pretty close to where I was starting from. I had the same problems, but I don't think they're related to settings - it's more about the throttle coming out of turns.
I decide that for this particluar car, I
need TCS. 2 clicks worth and it made a huge difference. Not just straight line accel, but also coming out of turns. I also made the gears a little shorter, which let me take more turns in 3rd instead of dropping all the way to 2nd.
Increasing the downforce helped on the wider turns, but not much on the really tight ones. Just what you'd expect.
Fifth run (if I counted right) and I changed the LSD. Here's my current theory on LSD and oversteer: An open (lower values) LSD won't
cause oversteer, but it won't prevent it either, because an open differential doesn't care if your left and right wheels are turning at different speeds. At worst, the inside wheel will spin and waste your power, making you slow on corner exit.
A locked differential (higher values) might help prevent oversteer, because it won't allow the left and right wheels to turn at wildly different rates, and that'll reduce the rear slip angle.
BUT too much lock, and you might light up
both rear tires, and then you'll have even
more oversteer with no warning or transition. In fact, you might end up drifting.
What do you LSD experts say? Does that make sense or am I way off?
In any case,
TuneRVisioN's LSD setting really seemed to help keep this car under control. But there's one problem - it seems to increase the turning radius, even if I'm going really slow. Maybe the settings are just a little too high.
I back off to 40/20/20 but that didn't seem to make much difference. But it's kind of a minor issue since the car is doing much better. In fact, I'm coming in 3rd in the race these last couple runs.
At this point I abandon the scientific approach and mess up my experiment by switching to T2 tires. None of the fast cars are making pit stops and I want to actually win the race before I call it a night. I come in second to the 787B.
Next race (must be attempt 9 or 10) I get a line-up without the 787B and finally take first place. That'll have to be good enough. I'm sick of this track and it's late.
But thanks for the help,
TuneRVisioN! I know you and
Duke were talking about the LSD earlier in the thread but I ended up backing off on those settings. I had this idea that too high a setting would "kick out" the back end, I'm not sure what I was thinking. I'm still a little mystified when it comes to tuning the LSD.
I haven't tested this in GT3, due to the fact that there isn't much understeer in GT3 as GT4.
)
