I've got a setup for Surfer's Paradise.
Up to Team: Corse Perdando Sonno
With enough fuel for 7 laps (qualifying fuel), I can run high 1:27s to low 1:28s consistently. With a full race fuel load, I run pretty consistent high 1:28s to low 1:29s.
Let me know what you think.
Dennis
This one is good for 1:25... but of course our cars are a little different so it may or may not help.
Well, I tried your setup, and I couldn't break 1:30.5 with my car...so I "borrowed" your car and tried it with your setup, and got the same times...1:30.5-ish, so I think it's more our driving style, and the fact that at this point I think my limiting factor is my driving ability itself. I'd love to see a video of you doing a 1:25 on this course, along with the motec data. I'd be really interested to see what your driving line is, especially with VB chicane on the back part of the track...I find myself pointing the nose of the car, jabbing the brakes for a half-second to settle the front and transfer some weight and then sorta coasting through with very little wheel input, letting the "bounce" from the curbing re-point the nose in the right direction...with a little blip of the throttle between bumps...I'm also down-shifting as I go...so it's hard on the gas in 5th as I approach the chicane, point the nose, jab the brakes just before entering the chicane <bump> 4th gear, blip throttle <bump> 3rd gear, blip throttle <bump> second gear, blip throttle, coast, a little left input, and then hard on the gas and accelerate up through 4th and just about ready to shift to 5th when I start to brake for Falken Tires turn. I think I'm doing OK with this line, I seem to carry quite a bit of speed through to the end. The onl y place I think I'm losing time up is the Lexmark chicane...it just seems like I should be able to carry more speed through here, the problem is if I carry a good head of steam through the first left-right, I end up too hot for the next left. The following turn, BP ultimate, is no problem, I'm hard on the gas in 4th when I stick the right front tire over the curbing...the curbing sort "grabs" the tire and yanks me through the corner without having to lift and without brushing the wall...this corner gets my adrenaline pumping...too far right and I've wrecked, too far right and I brush the wall (and wreck)...gotta love it
Anyway, Like I said, I'd love to see a video of your hot lap, just to see where we differ.
I also found myself getting dizzy while driving this track...which is odd, I've never been susceptible to video induced motion sickness before...then I realized I was concentrating so hard I'd forgotten to breath 
Anyway, I got some ideas from your setup...changes that did nothing to improve my times, but did quite a bit to lessen the rate of wear on my tires, so thanks.
Dennis