I would like to seek some other opinion from the turbo otai about this subject. As we know NA car compression ration is about 12-14:1. Bear in mind that is negetive pressure, the most is 0 bar or atmospheric...
hi to all bro out there, my friend bought evo 9 with minor modification but this evo 9 fuel consumption is really bad. he want to reflash that ecu but some mechanic told him that reflash will only make minimum...