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CAT help please.

535 views 7 replies 4 participants last post by  herrbohnen 
#1 ·
OK getting my custom exhaust fitted on 11th. Now my question is what shall I do with the cat?

1. I can gut the cat but leave it presant so MOT is fine for visual

2. Remove the cat completely and store it in case MOT laws change.....

Can't choose which 1 and a bit of help on the decision.
 
#6 · (Edited by Moderator)
Best long term solution is to have the insides of the cat stripped and a straight pipe going through it. Leaving it hollow may mess with exhaust flow.

Can the place you're getting g the exhaust from fabricate a fake cat? They'd need to weld something g around the new exhaust to make it look like one. Add any heat Shields that cam e with the original cat and it should look pretty convincing.

As long as you have an under tray fitted they'll have difficulty seeing the cat. They're also not allowed to remove it to look.

When you say "in case mot laws change" do you mean if they devise a test to analyse exhaust gas more closely on diesels? Currently it's an MOT fail if the cat isn't present and the car originally came with one. Hopefully more in depth analysis of diesel exhaust is a few years away yet.

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