They're designed for different markets, and the emission components on that vehicle reflect their intended market. IIRC, California requires all vehicles licensed in the state to conform to CA emissions. So your federal emissions Supra has to pass within the same levels of CA emissions Supras.
I read somewhere on the CA DMV website that they don't suggest importing a federal emission vehicle into the state because the cost of converting it would not be worth it. I believe that statement holds more truth to newer vehicles though.
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1989 7MGTE R154 Targa Top White Package w/Blue Interior
Driftmotion 57trim CT26, Upgraded Intercooler, 2.25" Hard Pipes, 3" Turbo Back Exhaust with Test Pipe, HKS VPC w/GM 3 bar MAP sensor, APEXi S-AFC, Walbro 255lph fuel pump, ProSport EVO Series Boost / Fuel Pressure / AFR gauges, Lotek a Pillar Gauge Pod, HKS Type 0 Turbo Timer, Eibach Lowering Springs, Tokico Illumina II TEMS struts, custom powder coated Motegi Racing TrakLite wheels
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