Cm870 all stock surge

[Rawze]

(02-16-2022 )Luckyjayb Wrote:  Great advice as always. Needing to do mine as preventative maintenance as well.

it is a good place to start... but those CM870 can also start surging like that when the (air operated) turbo controller starts going bad too. - It is cheaper however to do a tune-up and cover the basics before starting to replace more expensive things is all.