Hi Motor City Hami,
Ive had a play with your GT5 Advanced Tuning guide, heres what I found. Feel free to question my testing environment, method and even driving style, I promise I wont be offended! To me, understanding is more important than ego.
Im running GT5 v1.10 and drive using DS3 with steering sensitivity 0. The car was an Audi TT, stock except for suspension, LSD, DCCD and sports hard tyres. Initial settings were the defaults. I used my private lounge at Cape Ring Inside track. Settings were no tyre and fuel wear, grip reduction real, aids off, ABS 1.
LSD
Avoiding the very strong temptation to stiffen the springs (argh!! its like a boat!!), I came up with the following LSD settings:
LSD initial 8 / 8
LSD accel 10 / 14
LSD brake 5 /5
For this TT, the LSD settings had a smaller effect than Ive seen on some other cars. Personally I think this is due to it being 4WD, low power and low grip tyres. Lap time was 59.3.
DCCD
Default settings was 60 / 40, I felt like a bit less exit understeer would help, so
VCD 70 / 30
But this caused the rear to slide out of the 1st hairpin, which was fixed with revised LSD settings:
LSD initial 8 / 12
LSD accel 10 / 12
LSD brake 5 / 5
Lap time improved to 59.0.
Anti-roll
Finally, I can reduce the body movement. Phew! Default settings were 3 / 3, so I tried:
Anti-roll 5 / 5
I liked this a lot better, but when the lap time flashed up, it said that the car didnt: 59.3. Maybe the softer settings allowed the car to dig in to the road better for more grip. But I was still looking for some more stiffness than 3 / 3 and also a bit less understeer, so I tried
Anti-roll 4 / 5
This felt like less understeer, and the lap time improved to 58.9. To check whether a stiff front would increase understeer, I then tried
Anti-roll 5 / 4.
Now things get murky... I couldnt feel a difference. Balance and lap times were both the same as 4 / 5. And even at 4 / 5 I felt that any more understeer would mean slower laps, so the stiffer front wasn't increasing understeer. To make sure, I cranked it up to
Anti-roll 6 / 3
...expecting lots of understeer. But there was less understeer! Huh?! With all previous settings, I had to lift during the uphill sweeper otherwise I would run wide. But with the much stiffer front, I was now taking it flat. Lap time 58.7.
Springs and Dampers
Still looking for a bit less body movement, I tried
Springs 10.5 / 7.5
Damper ext 7 / 5
Damper comp 5 / 3
This felt great. But the stopwatch disagreed again... lap time 59.3. So I tried softening things a bit:
Springs 8.7 / 6.3
Damper ext 6 / 4
Damper comp 4 / 2
Like the stiffer settings, this also had less grip overall. More understeer also crept in, and I suspect braking distances were a bit longer. Lap time 59.4
So I returned to the default spring and damper settings from then on.
Ride Height
Ride height -12 / -12
Both my thumbs and the stopwatch found this made no difference compared with the default of 0 / 0
Epilogue
Please dont think Im criticising your method, MCH, these are just my observations. Also they are only for one car at one track. Hope the feedback is somehow useful.
Cheers,
Simon