Quote:
Originally Posted by SyncroS8
AFAIK, you can run an extension on the post lambda sensors. They're only looking for a delay in signal from the gas going through the CAT.
However, you won't easily pass your MOT without CATs. The only way I could think of doing this would be to add an exhaust pump as per Porsche 928s to get the emissions down to 0 at idle.
MG |
Not delay, they are looking for lower O2 content then before cats. What you see in the picture is bringing it out of the flow. Less flow= slower reaction= lower voltage so ECU thinks cat is working OK.
I have also seen small incision made in exhaust just before lambda and small piece of metal sheet welded in to do the same thing.
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Currently 8less
2011 Q7 S Line 3.0TDI, 2016 Tesla Model S 90D
8 history:
2006 A8 Sport 4.2TDI quattro SOLD,
1997 S8, reached end of life with gearbox failure
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