Fuel Economy - What do you get out of a tank?(2nd gens only)

[1986semagna]

Is that even possible on the street , i dont think its even possible on the race track with a fairly stock vehicle?

correct me if im wrong.

will it is when i am not running a air flow meter so lots of unburnt fuel

[millsitp]

7 year bump.
After servicing my 2.6 auto ts wagon recently and bumping the timing from 13 to 15 degrees I got 9.96L per 100km on my usual driving around. This is down from my long term average over the last 10k kms of 10.8-11.0.
Keen to take it on a highway run to see what it can do.