CM871 Engine cycle...

[Rawze]

(12-22-2016 )Rock hound trucking Wrote:  i have the same trouble with my @m*m^2 any boost over 38 psi and i get a a vibraton back out of it and the vibration goes away . how can a guy fix it or what changes have to be made . i pull the mountians lots and like the extra power my pyro runs around 750 when pulling hard with high boost once a back out it it drops down just below 700

Lower the boost levels a bit. It sounds like your making too much boost for the power your making.