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hughjass
26-01-2013, 10:56 PM
Hi all
Sorry if this is a noob question.

Does the A6 C5 2.7t biturbo have 4 cats or 2?

I'm thinking of getting de-cat front pipes but want to know if there are other cats for emissions on a mot.

If so, will it still pass a mot?

Thanks
Carl

hughjass
28-01-2013, 07:08 PM
Hello anyone?

cctuning
30-01-2013, 11:57 AM
This car has 2 cats and if you get de-cat pipes fitted then it won't pass it MOT.

shane0569
19-02-2013, 10:15 PM
This car has 2 cats and if you get de-cat pipes fitted then it won't pass it MOT.

Not correct...this car has 4 cats, two pre-cats right after the turbos in the DP, and two main cats down along the transmission.
If you gut them, you can pass emissions by either adding 02 sensor spacers...(if they dont see em)...or getting a tune that deletes the down-stream O2 sensors.