r33 s1, stock ecu,stock turbo, 3"inch cat back zost, pod, 11pis boost.the car does move unless i tap it abit harder but then its in boost so i back of. wat i meant to say was. do i have to reset ecu, regap spark plugss or thins like that if i turn boost down really low until petrol price drop a little. i get 400ks with 50-55 litres when i fill up.