cmb .91 tuned pipe lenght

[michel parent]

Hi guys i put cmb .91 rs in my hydro and i never run that size of engine so i would like to know what is the start set-up for the lenght of the pipe on that engine i have ops pipe thank you mikelemecano

 

[julianconde]

best pipe for me is a Macs 1394 with the 1 inch head pipe @ 11 1/2 60% nitro

 

[michel parent]

thank you for you help

 

[julianconde]

take your time with the motor and DO NOT lean on it or KABBOOMMM...

 

[kesjeff]

I don't know but back years ago with some of the older 90's that I had is you run on the richer side for a few tanks then all of a sudden it seems to take off then you know it was broke in. Do they still do that with the new models?

Jeff