@Zorz
Well it seems to me that the fastest result comes from combining our tune philosophies.
27:02 and Fastest Lap!!!
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As per your tune, the Low rpm Turbo accelerates faster than my High rpm Turbo, but then it fails to deliver top end speed on the straight, and it consumes fuel trying. So the logical compromise is the Medium rpm Turbo.
Accordingly I extended the gear ratios (from my previous tune) to utilise the mid-rpm power, and adopted your idea of compromising on the breaks to achieve the PP requirement.
Strangely I found the handling worse, but possibly that's due to slightly higher corner speeds, or poor brakes. It essentially doesn't require any fuel saving strategy, but I did lean the mix and/or short shift, when in slipstream), just in case.
Again the limitation is the front tyre wear and the entire last lap was run with fully depleted tyres.
It turns out to be a fun grind, and I almost lapped Gentry in the Viper.
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