Good morning Forum I drive among others a Saab 95 Aero Sportkombi automatic, BJ 02/2004. After an engine damage meir my free workshop has installed another (used) aero engine. The Aero also drives again, but has too little power when speeding up. It jerks very strongly. In the error memory are no messages stored, the turbocharger has been checked, as well as the spark plugs (NGK BCPR6ES-11). On suspicion we have already installed the ignition cassette of my Saab 93, BJ 04/2002. But there was no improvement. What can be checked now? Unfortunately, my workshop doesn’t know any more. Thank you very much and many greetings from Michael Mark