URD's SC is not legal on CA streets. So what makes the TRD any different? Does anyone know the technicalities(In CA) that makes SC/Turbo ok in vehicles. I know that it is mainly emissions based- but does it have to be installed at an authorized place or what? There are a lot of turbo/sc vehicles in Ca ...i.e. WRX, EVO, Lightning for example- So what makes these ok and some aftermarket applications illegal?
Thanks
Thanks