Pass aircare/smog testing
In this one we're getting my Trans Am ready to pass aircare, despite a complete lack of catalytic converters, downstream o2 sensors, secondary air and exhaust gas recirculation systems... So basically all of the emissions systems are gone.
We use HP tuners to stop the PCM from throwing codes for any of the removed emissions equipment (Not really shown) and an old heat shield to replicate a catalytic converter for visual inspection.
Feel free to check out some of the other videos too.

