When you pressure test a K04 car, the turbo oil seals will allow some air/ oil to pass through and cause the oil in the sump to buble and find its way into the combustion areas /turbo. I often burn of oil after a pressure test but it should not last for much more than 10 miles, this is why its slowly getting better.
A well made k04 turbo is a great piece of kit and is currently the cheapest way to break the 300 bhp barrier in an LCR, how can an upgraded k04 not increase power - its a nonsense. What is needed with a hybrid is its owner to have a hands on approach or use a decent tuner who understands that an increased compressor wheels will ultimately require stronger actuators if stock power and above is to be made

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The forge actuator is a great piece of kit but its not fit and forget on stock rods or else your gambling. Fit it with an MBC to limit peak boost and your laughing but limp mode on a RR is possible though due to the increased acutator pressure.
I love my APR remap and recommend it highly but APR does not offer an upgrade route past stage 2 and for this purpose because i believe a hybrid needs stage 3 for best resuts i'd advise you to go REVO if a hybrid is on the cards its cheap too.