If you have a technical problem with your 200sx, need help fitting a modification or even want a rough idea how powerful your car is there is a good chance you could find assistance in one of the following threads

S13 Useful Threads
http://www.sxoc.com/vbb/showthread.php?t=64002

S13 Guide to Modification
http://www.sxoc.com/vbb/showthread.php?t=63508

S13 Power Figures
http://www.sxoc.com/vbb/showthread.php?t=142254

S14 Useful Threads
http://www.sxoc.com/vbb/showthread.php?t=70865

S14 Power Figures
http://www.sxoc.com/vbb/showthread.php?t=123910

S15 Useful Threads
http://www.sxoc.com/vbb/showthread.php?t=172195


There is also a technical theory section here

http://www.sxoc.com/vbb/forumdisplay...c&daysprune=-1