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1994 MAZDA PROTEGE FAILED NOX
i have changed the exhaust cat and drop the co, hc and nox to half co is 0.02 pass, hc 35 pass nox is stil 1500 down from 3200 could you help, temp is ok Login to read more. 
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| Engine | 1.8 L |
| Trans | 4-speed Automatic (Electronic) |
Vehicle Data
1994 Mazda Protege 1.8L
| Engine | 1.8 L |
| Trans | 4-speed Automatic (Electronic) |
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