QUOTE(RiceRocket @ Mar 9 2008, 12:24 PM)

128hp 600? Is that the 4 injector, vs 125hp 2 injector?
128HP is what American Snowmobiler magazine dyno tested the advertised 125HP 600 CFI engine (4-injector) at for 2007. Its pretty well agreed that they make all of the 125HP and then some.
The new 2-injector (120HP CFI-2) is only in the 09 Switchback Shift 600 models as far as I can tell. Note: non-Switchback Shift 600 models are still carbed and rated at 120HP. All other 600 CFI's are still rated at 125HP.