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Question
I have a 2006 Altima 2.5 that has a clogger pre-catalytic converter. Muffler shop say's 795.00 to fix. I have read that I can replace the pre-cat with a header and spacer on the bottom sensor. Have you heard of this being done to get rid of the bad pre-cat? It is much cheaper and still has the rear cat.
Thanks, Brad

Answer
Hi Brad -

Yes, I have heard of this being done, but I don't know what the emissions laws are in Tennessee, some states will not allow it.

There is a reason for the system the way it is, and although you can skate around it, I would not recommend it. This may also reduce the life of the second CAT.

Hope this helps -
aloha
Calvin

Nissan Repair

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Calvin Iwashita

Expertise

All general car repairs for all models of vehicles, except technicals (overhauls) on A/C systems and transmissions.

Experience

16 years as a car mechanic from 1974 to 1990, and still repair cars on the side.

Publications
TV

Education/Credentials
High School and college graduate

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