Here is a thread when me and John took out VX's to a 4wheel dyno.

We did not have a stock VX there since both of ours had the same mods, only mine has the SC and John's does not.

Since then I added a new dual catback and went up bout 9hp over the old catback I was using. I dyno'd 216.21HP and with the new duals: 225.36.

Bottom line this is the way the VX should have been from the factory!
There is a gain everywhere, but I seem to notice more after 50-60mph.

http://www.vehicross.info/forums/sho...highlight=dyno

http://www.vehicross.info/forums/sho...highlight=dyno