[:@]I have just bought my first Porsche Boxster,a 2.5ltr 1999 model.I have had problems with her in that the engine cuts out when driving and for no apparent reason.This can be very embarassing when you are at a traffic light with cars behind you,etc.We have had her on diagnostics but everything shows ok.We changed the crankshaft sensor as we thought this maybe faulty but she is still cutting out.This has led to my confidence in the car being not too good as you don't know when she is going to cut out,etc.Can anyone give me any suggestions as to the problem?