Hello friends, many will know the martyrdom that I’ve been with since the end of 2019. For those who don’t know it small summary: From BSR Stage 1 to BSR Stage 3. 14 months later, no TÜV get, because very bad exhaust gas values. TÜV thinks KAT is through. BSR sends me a replacement KAT on Kulanz Unfortunately not exactly the same, the recording for the Lambdasonde2 was missing in the right place. “New” KAT built in = nevertheless badest exhaust gas values, the same As before (see picture) the search followed, what can be there, and in countless workshops (often full of storytellers & no-turners) parts were repeatedly renewed and various experiments carried out. Parts were renewed several times, etc. More than 6000.- flowed into these rep. attempts Also an engine damage was there again, as already 1 week after the BSR Stage1 installation. Whether the two engine damage (which were exactly the same / exactly the same valves burned in the same cylinder / because to lean/ o Although EVERYTHING came new, and only & alone the software of BSR remained the same), I can’t say, I pers. think of my part). Now it was enough for me and I ordered and had a “decent” KAT installed. Result see picture. Conclusion, I could have saved a lot of money, I would have installed something decent. The error code after that might have come from the bad KAT which has heated up the likewise renewed 2 probe. I thought I was putting I’m also thinking about removing the software from BSR and replacing it with another one? But this is still open, because if I get a 3x the exact same engine damage, not only will the software be checked by an expert, but also a conversation with BSR. When I told them this, this year, what is going on, not even an answer came. Also comparison data di e these have promised me, have not come the last months. Speak bird tactic, instead of helping support Actually sad for such a company. But as I said, this is my pers. experience like opinion, and should not deter you from the company, or prevent you from acquiring something at this. Maybe I am just an isolated ? Greeting