Fuel comsumption.
My stock 33GTR used to get 400km/tank (Daily driven for a good year, put on 11k kms)
My highly modded 32GTR used to get 500km/tank cause it was tuned with a power fc. (Did 1000kms in 4 months, weekend warrior, hks twin plate = no thx in rush hour)
Rest of your queries, use search mate...