Re: Auspuffberechnungsprogramm ???
Use one of the two stroke engine simulators to find the perfect pipe.
Mota: http://www.iwt.com.au/MOTA.HTM
Engmod2T (engmod2t.pdf): http://www.rddreams.com/neels/
and the freeware version of Lotus engine Simulation: http://www.lesoft.co.uk/
I think the best SIMPLE designer file is: prog62b by prof Blair
Find the prog-reeks.zip at http://www.ytcn.nl/archief/index.php?dir=Software/
The best cone layout software: Mota (or Mota Demo)
Regards