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Discussion Starter #1
I am grappling with a P0420 code and, working with a Honda garage, the upshot is that it looks like the cat will need to be replaced. That is is not a problem (except for the price!) but the garage is saying that owing to corroded parts, they will almost certainly destroy the rear exhaust in the process of exchanging the cat. A rear exhaust can be obtained from Honda but it would need to be shipped from Japan (with a March arrival date). Problem is that my MOT expires end of January! Does anyone know where I can lay my hands on an exhaust (Part No. 18030-S3Y-E00 (PFKL380680) as per image) from UK or Europe* (Lings show the part as available but they, also, would have to order it from Japan)? Thanks, folks!

* My understanding is that USA cars have a different exhaust system
Charles Hussey
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As you might suspect I have a complete second hand exhaust system and cat available for collection with about a week notice. :)

You will almost certainly need the exhaust joint springs/bolts and the asbestos doughnut gaskets for the two joints..

I strongly suggest you ring me about this..

Destroying the rear stainless steel exhaust smacks of an incompetent garage.
Yes they might have to cut the joint bolts off but that's about it.
Can you get some pictures of the joints.. So we can asses..
 

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Discussion Starter #3
Peter, of course you happen to have one: you are, after all a Grand Wizard! Garage says that they will have a ramp free around 5 o'clock so I shall pop over and do a proper inspection - and will get back in touch thereafter. many thanks,

Charles
 

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I was thinking the same but of course mine is a Japanese car which seems to have no cat at all! Peter and I have discussed this before
 

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Looking through my stuff in Hull I find I have a good complete exhaust here including CAT and secondary O2 sensor.

I also have one new donut gasket.. All immediate availability...
 

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Discussion Starter #6
Have now had a chance to look under the car. The rear exhaust is in good condition and the only problem is the connection to the cat. Replacing the whole of the rear exhaust is the lazy option. I am wondering whether garages who specialise in fabricating exhaust systems could cut the exhaust before the first chamber and make up a new pipe and connector. I guess that i am not the only one to have encountered this issue!
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Certainly that is an option..
Cut the flange off and weld another on.
Show the pictures to a specialist exhaust local firm and see what they say.
 

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Before you get a new CAT. Read about the ECM recall where the ECM triggers a bad CAT message when the CAT is not bad. Although yours looks pretty rusty.

 
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