Hi guys & girls, As many people already know, I have a Bastuck stainless steel complete system under my Z4 ! I mounted the system with a edge myself. And was completely satisfied with the quality, fit accuracy and the price. Of course also the sound is right, I heard an Eisenmann before was also not bad but at the top not quite as flaming as Bastuck. In addition, the whole exhaust manufacturers must not deviate from the standards any more. At the latest now the price comes into discussion if you think that already an Eisenmann ESD costs 760 Euro and you order a Bastuck complete system at Rieger-Tuning and at Bastuck direckt for approx. 650 Euro can not be considered for long. If first wanted to order the system at a dealer and have it mounted he wanted to have 900 Euro then from me after negotiating. If you do not want to be cut over by the dealer and the system can not be mounted by itself or.. Then I would like to The sound is in the lower speed range much duller up above and when taking away the gas it easily rubs like a race car! Conclusion: I’m satisfied, quality is also right and is still absolutely suitable for everyday use ! Came to the idea because some asked me by PN like the Bastuck is like that and want to hear it too. And even like to mount on my Z4 as long as I don’t feel overridden. Greeting Mark o!