[J1/J2] Are California spec cars different than cars sold elsewhere in the US? [Archive] - Hyundai Elantra Forum

: [J1/J2] Are California spec cars different than cars sold elsewhere in the US?

07-12-2011, 09:27 AM
I have a 2000 California spec car. I was looking under my car the other day and noticed there are 2 cats, 1 resonator, 2 silencers, and 1 muffler. I thought this was a little ridiculous. Is the non Cali car different?

07-12-2011, 09:39 AM
The difference is the emissions standards. California, Oregon and some NE states have more strict guidelines so the cars generally have more stuff to make it cleaner. Many times this affects the performance numbers too.

For example, here's a quote from the 2012 Elantra press release.

Under the hood, the Elantra is powered by an all-new 1.8-liter Nu four-cylinder engine with 148 horsepower and 131 lb-ft of torque (145 horsepower and 130 lb-ft of torque for Elantra PZEV). Thanks to advanced clean engine technology, most Elantras sold in California, Oregon and several Northeast states are certified as Partial Zero Emission Vehicles (PZEV) by the EPA. The PZEV Elantra is as clean as many hybrid electric vehicles. The PZEV Elantra helps Hyundai meet its environmental commitments. Outside of these “green” states, the Elantra is available as an Ultra Low Emission Vehicle (ULEV).

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07-12-2011, 01:19 PM
WA also has the CA standard as well.

07-12-2011, 05:43 PM
Was there a difference back in 2000? I only recall a difference starting with 2004 Elantras (ULEV vs SULEV). The design is similar (precat and cat). My Canadian non-Cali ULEV Elantra passes the pretty strict SMOG requirements of San Francisco just as well as any SULEV, so I don't really know why there's a different requirement.

I think the 2 cat system was introduced with OBD-II, regardless of where the car is... resonators/silencers/mufflers aren't emissions-related.