My setup for mt own GTVault challenge. This car is an easy going car tuned from a DS3 controller. The key to getting the fast time in this challenge was the bus stop turns during the 4th/5th sector of the track. If mastery of the two turn were there, you were gurantee a fast time
I would contend that getting clean exits out of the slow corners, (1, 2, 4, 5) in the infield were worth up to a second cumulatively; but that said it could all be thrown away at the bus stop. It is important to never ignore the small things, as they always add up.