870 turbo overspeed cel

[Rawze]

(07-21-2018 )tree98 Wrote:  I'm at 650 hp. I'll have to try to find this leak.

Leak or not, and even at 650hp, you should not be hitting 40+ lbs boost if you care about your engine longevity. Have it backed off to about 37 - 38 or so max instead. engine only needs 38 lbs boost even at 900+ hp.