Home › Forum › Ask A Member › Pulsating 15hp detuned down to a 9.9 question › Re: Pulsating 15hp detuned down to a 9.9 question
June 10, 2015 at 10:57 am
#17898
I think there are three main parts between the 9.9 and 15, The Carburetor, the tuned pipe under the powerhead, and the carb advance cam on the mag plate.