Hello @all, Last year I noticed after a workshop stay that my 9-5 aero in the speed range between 2000 and 3500 rpm no longer had the bite. I announced this to my workshop, and this was forwarded to Saab, but unfortunately nothing was done by Saab. Last week I had the performance measured in a renowned workshop with a modern test bench. (No Saab contract workshop). On the homepage of Saab is a performance curve. e pictured, on which it is stated that the Aero engine should produce between 1800 and approx. 4800 rpm 350 Nm. Only the performance curve of my Aero did not look so great. at approx. 2300 the machine produces 280 Nm times, and unfortunately the curve did not rise as explosively as on the Gravik of Saab. The performance peak was temporarily 368 Nm at 5000 rpm. And 249.1 hp at 5800 rpm. What else to mention, on my vehicle I have the great stainless steel exhaust system from Hir According to Rene Hirsch, there must be still 5-8 HP in there, but they are not to be felt. Today I forwarded the expression of this performance measurement to my Saab contract workshop. Has someone had similar experiences here in the forum, or let his car be measured on a dynamometer? What bothers me is simply the weak rotational omento of my vehicle, which is also really noticeable. The vehicle is a 9-5 Aero Sportcombi EZ 04/2003 with Sentroni c. MfG JürgS