Anyone have some tuning tips for Monza TT?

[yanaran]

I've been working on the latest time trial over the weekend, and I've been using the Gallardo. For the most part I've been running the default suspension settings and LSD. At first I felt like it was just an under-steer monster but after setting the torque dist. to 30/70 and driving for a few hours I just kind of got used to how it handles. I tried RKMs tune briefly but it over-steered like crazy under power coming out of the chicanes for me so I went back to default. I also spent about 6 hours trying with my car tuned to exactly 660 HP before I realised, from watching the leaders lap, that you can max tune the car and use the power limiter. That shaved almost half a second when I tried it.

Currently I'm using the GT5 quickcalc suspension settings and my own camber/toe/LSD settings that seems to handle quite neutral. I've also dropped the rear RH to the bottom which seems to have helped entering the chicanes.

Aero: 0/20
RH: 0/-20
SR: 11.0/11.0
DE: 5/7
DC: 6/6
ARB: 3/3
Camb: 2/1.5
Toe: 0/0
LSD: 9/18/9 front 18/36/18 rear
Centre Diff: 30/70

I've managed to get down to 1:46.6 which felt like a near perfect lap for me, but I'm still over a second behind the top. I also have a feeling that a lot of the better drivers haven't really bothered with the TT, not many GTP_ names that I can see for instance... I seem to be losing the most time on entry and exits of the chicanes, while I'm actually slightly faster through the two right-handers in the middle of the course. X-Mato seems to be able to take the high-speed right without lifting at all, as well as being able to enter the following chicane and the left-right-left S's about 5 kph faster than me. Is there anything in particular that I should try on a course like Monza that's mostly straights and chicanes?

 

[drivehard]

You could decrease the downforce which should make up some time. With it being a 4WD and Monza being mostly straight aways it should be managable.

 

[Adrenaline]

Custom gearing probably, with perfect shift points to maximize the use of the power band.
Or try the other 6 Gallardo tunes around.

Keep in mind, that GTP_ names are secondary accounts, that we had to create for the WRS. Our main accounts are what most of us still use for the online events. I only log into my GTP account for official WRS events where it's required.

 

[yanaran]

Thanks for the ideas.

drivehard, I've tinkered a little with aero but the car started feeling really unstable and I'm not sure there's much gain in it. I'm still making 289kph across the start/finish just like the leaders. It feels like it's all in corners.

Adrenaline, I didn't realise that people only used those names for special events; now I feel silly for making a new PSN account for the time trial! I forgot to mention that I've altered the gearing a little to try and get higher speed on the straight. I made 2 as long as possible, 3 about in the middle and 4-5-6 quite short so each shift drops me at ~8000 rpm. Max speed right now is about 335 but I'm thinking I should drop it down a little lower, might try that tomorrow.

 

[pmgolf]

Best 2 Gallardo tunes I've found so far:

GrimSinn's, and MightyMoeJoe's without the Torque Balance. I'm still testing them, but it's taking a while. I have 7 different ones. Adrenaline's stickied post is the place to start.

Pete

 

[yanaran]

pmgolf thanks for the tip. GrimSinn's was all but undriveable on sports hard, couldn't get within a second of my best time, power oversteer on every exit unless I went really slow. Maybe it work better on race softs but it felt like he turned it into a tail-happy RWD...

MightyMoeJoe's suspension settings felt really nice though; it got rid of the "snap" back when you release the brakes while turning, and also let me take the fast right-hander without lifting at all. I only lowered the camber a little bit because I'm not using softs. Managed to shave a few hundreds off my time down to 1:46.487, even though I messed up the final corner. I also deactivated the differentials, feels a bit more balanced that way so I guess he's on to something.

Finally within 1 second of the leader, I can live with that I guess!

 

[yanaran]

So

Now that the Monza trial is over, who can explain to me why setting ride height to +40f/-20r gives an almost .5 lap time improvement with everything else the same? I noticed it while testing the stock tune and figured it must be some kind of exploit so I didn't use it the rest of the time (just -20 to the rear from my first post). I tried it out just now with my final tune that I set my previous best lap - 1'46.420" (in about 12 hours total trying) - and in 20 minutes managed to improve that to 1'46.141". Certainly not due to better driving either; didn't have my glasses on, sun shining into the room and my stomach growling for food!

Anyway, since this seems to work for everything from LM cars on ovals to Lambos with sport hards on Monza, there must be some systematic reason? Just another glitch like the ballast stuff budious wrote about?

If you don't believe me download the winners best lap and check out his car in photomode.

 

[Adrenaline]

It's a so called 'glitch' that exploits the principles of downforce I believe? It's been known about for a while, although many claim it's a 'myth'
I've never personally tested it, but based on the car, the more reverse rake you give it, the more oversteer you can force into it. On a car like the Lambo that seems to be plagued with understeer, you can see how that would be useful.