Never clocked it, I have a friend who's an rcmp officer so I can arrange a speed test sometime. It'll be interesting to see what it'll do flat out just as a comparison between the jetpro and rn pipes (when i get one, nice forum member in Holland is tracking one down for me).
I got all the different gear ratios from 48 down to 40 so I reckon given enough flat space and the right gearing it'll turn some pretty good speed.
However mph isn't really my thing I'm more of a torque freak (my 2000 dodge cummins is 820ftlb
) for bottom and midrange grunt.
I'll post some vid when it's all done and see if i can't include a speed test just for fun.