Without Kat driving?

Hello people, I have an audio v8 (logically) and wondered if I should not expand the kat? first to save until the next tuv! 2. Could I imagine that a very nice sound will come out! my question to you: does this work without any problems with the technology so that the dare here doesn't go crazy because of thelamda probe (control)usw? who tried this or...?

Thanks again for your tips.

Gone

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