engineer reports wont pass a defect station because cops see it as if you have any mods that dont suit S.A road rules then its a defect. Reports are only good for regency and they do pass without a prob unless you have modified emission then thats when big dollers and alot of research comes into it. It's $700 for emission test at regency and if you dont pass then thats $700 down the drain, plus you have to pay engineer's and thats not cheap for emissions law.