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Old 01-25-2010, 08:13 PM   #4 (permalink)
Christ
Moderate your Moderation.
 
Join Date: Nov 2008
Location: Troy, Pa.
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Pasta - '96 Volkswagen Passat TDi
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You could start by measuring what your actual emissions are. If you're not satisfied with those numbers, you can add a cat from any similar sized engine.
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