Sniffer

New Member

• Sep 8, 2014

• #1

Hi, I have removed the internals of my cats in an attempt to decat the beast but leave the impression there are still cats fitted for MOT purposes
Heres the problem - it sounds like crap, all tinny and hollow
So, has anyone else done this with any success? if so how please?
Cheers in advance
Sniffer

 

N

N5Fav

Member

• Sep 8, 2014

• #2

So you are hoping that it will pass the emissions test with no innards in the cats? - unlikely

 

Sniffer

New Member

• Sep 8, 2014

• #3

N5Fav said:

So you are hoping that it will pass the emissions test with no innards in the cats? - unlikely

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It's running LPG fella and as it will be presented for MOT running on gas it will be tested on gas and the emissions will be negligible, last time it showed a reading of 0.0003 so I'm not concerned about that aspect, I just need it too look like they are still fitted to ensure the visual element of the test is passed!

 

DIFFLOCK66

Well-Known Member

• Sep 8, 2014

• #4

Might have to change the exhaust further back from the cats, i.e. big bore straight through etc. should get rid of the tinny hollow sound

 

D90mitch

Well-Known Member

• Sep 8, 2014

• #5

My disco 1 V8 still has the cats but is straight through otherwise to a single pipe (going dual eventually - with X section in the middle of the truck). Sounds the dogs dooh dahs - Cats rattle a bit though. Will change them eventually. Problem with removing the cats is the lambda sensors, if you don't do something with them the Landy will thow a wobbler.

 

N

N5Fav

Member

• Sep 9, 2014

• #6

Sniffer said:

It's running LPG fella and as it will be presented for MOT running on gas it will be tested on gas and the emissions will be negligible, last time it showed a reading of 0.0003 so I'm not concerned about that aspect, I just need it too look like they are still fitted to ensure the visual element of the test is passed!

Click to expand...

Should be Ok then from the emissions side of things, just make sure the MOT tester knows it's on gas and - no problem

 

Sniffer

New Member

• Sep 9, 2014

• #7

N5Fav said:

Should be Ok then from the emissions side of things, just make sure the MOT tester knows it's on gas and - no problem

Click to expand...

That's the plan, just need to make it sound better, think I'm gonna get me another "Y" pipe and see if I can weld a pipe inside the cats!!