I think it'll work best with a lower power and pitting once. Maybe when the AI pits the second time you overtake everyone and sail to an easy win.
It's easier to control at low power and there's less to overtake, yet after doing that race in 3 different ways, full power and 3 pit stops (I actually did 4 yet fuel map 2 for 1 lap would have made it 3) I ended up lapping everyone, but the first 4, twice. I couldn't see the time to 2nd anymore for the last 5 laps as I had lapped him already.
With N400 Porsche fuel map 1, pit end 6, end 18, I end up 1 minute 45 or so ahead of second.
With N400 Porsche fuel map 5 and 6, 1 pit end of 13, I end up about 50 sec ahead of second.
What I haven't found yet is a way to do it clean. Attempt 6 failed while stuck behind 3 erratic driving AI, while another one from way behind suddenly got the racing itch, caught up and rammed me at the hairpin sending me into the car in front of me. That was after my first pit stop, lap 8. The problem is the AI seems to activate when you get near, then starts racing for real and catches up with sleepy AI in front to form a messy blockade. The low power Porsche isn't fast enough to get ahead of these suddenly boosted AI, they suddenly floor it and run into you.
The AI is weird, I pretty much run the same lap times. Sometimes the gap steadily increases, sometimes it's completely stagnant and sometimes they suddenly close the gap at a rapid pace.
Next time I'll keep more distance yet again to see if it's somehow possible to stay clear of the AI. Attempt 6 I was still 50 sec ahead at the end, plenty of room to take even more evasive actions and hang back. In theory 2:15 lap times should be sufficient for an easy win.
I tried to do it clean with the 1 pit stop strategy as well yet go stuck behind a group for too long and the leader build up too much of a lead. A pit stop after 6 laps guarantees some clear road to make up time. By lap 6 I'm usually stuck behind 5 AI cars in 13th or 14th place. The rest floors it as soon as you pull up beside them, then catch up with other AI to form a blockade :/
A full power Porsche might be easier to keep clean as you can easily overtake them on the straights, yet I'm trying to max the bonus