key and exhaust problems

rayofsunshine

Registered
i have a 97 mark viii and only one key i can start the engine with the key but if i unlock the doors with said key the alarm go's off. my check engine light is on and the code says uneven catalyst flow so i'm guessing that i need new cats but the dealership wants 2,000 for one side and like 2,500 for the other the only other cats that i have found need pipes bent to make them fit. does anyone have any solutions to any of my problems. oh yeah my car has 124,000 miles on it.
 
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