[67-ls1]

I just went on summitracing.com and there are 2000+ items listed with CARB EO numbers. Camshafts, carburetors, headers, cats, cat back systems, superchargers, CAI kits, computer chips and modules. Jegs had more than 1300+.
All perfectly legal for street legal, emissions compliant vehicles in the California.
So you can modify your car/truck for better performance or fuel economy and still be emissions compliant.
Also note this rule about ECM’s is not new. It’s been the law in California and the other (I believe) 20 states that follow California’s emission rules. The change is they're just now starting to check for the ECM mods. It won’t be long before those other states follow.