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All I know is California has the strictest air regulations in the country.
But when you look up America heart and lung associations list of "cities with the worst air quality" the top 5 or 6 are in California.
In California I believe they have their own evaporative emissions standards too in addition to tail pipe.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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