Overboosting, wastegate failure?

Zklonne

Member
Started to notice some hesitation at WOT a few days ago - finally looked down at the boost gauge to see I am crazy overboosting. ZZP tuned previously 18-20 psi max, As you can see in the pic and video a quick hard 4th gear pull shot up to 30 psi (note my frantic throw down the phone before I blow the motor as I didn’t know previously it was going THAT high...).

Anybody had overboost issues? Is it right to assume wastegate failure off the bat, or anything else to check off first? Motor is an LNF with Stock turbo.
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