not stage 1, its system 1 for standard evo. plug and play ,for boost 1.3 , 7500k rpm limit, unlimit 180km, modify correction point , advance timming ,. etc
1. engine / ecu, etc. all are stock original.
2. HKS hybrid oem replacement air filter.
3. catalystic converter replaced with straight pipe.
4. HKS silent hi-power, centre pipe to...