6:45 time is moderate acceleration. Power was breaking up and stuttering towards middle of light pull. Can see fuel trims tending lean and timing corrections getting steep. Looks to me like a vacuum leak according to data, but find no evidence of one 6:52 time is accelerating normally from stop then cruising on highway 6:55 time is idling Running 92 octane fuel, on 91ACN MHD 2+ tune. Plugs new at 0.019” gap, injectors all coded correctly and validated, coil packs are eldor and just over a year old, compression was last measured at 169-179. Smoke tested engine morning of light pull for any vacuum leaks and saw zero smoke trails. Found a recent active code for “ 2D2E - DME: Throttle-valve angle - intake-manifold vacuum, correlation.” No known vacuum leaks or PCV issues. Crankcase does build slight pressure when sealed, not vacuum. PCV system is pulling proper vacuum as expected. External catch can, but initially tested with all new OEM PCV and valve cover replacement.