Audi S4 B9 Catless Downpipe Exhaust Sounds

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[@wenbocheng5117]

sounds awsome! which brand of downpipe? And did you tuned ecu ?

[@mabtuning]

We make our own downpipes :) . Contact me via Instagram or email . [e-mail]

[@TehAnalog]

Is the rest of the exhaust stock? no resonator deletes, just the test pipe?

[@mabtuning]

the rest of the exhaust is stock . We only changed the downpipe on the car .

[@pollorobot69]

Any Cel Problem?

[@mabtuning]

You would need to add a mini cat sensor for the cel light to go away