Home › Forum › Ask A Member › Mercury 9.9 Mod › Reply To: Mercury 9.9 Mod
September 13, 2025 at 9:26 am
#299861
Hello group, I recently picked up a 9.9 Merc and would like to try this Hp modification. Would it be just a carb swap or is there any modification to the intake or exhaust as well? Thanks
Gary Kosiba