91 Octane

boost not coming up, i don't believe there is a boost leak. there is an odd thing where after going wot for a few second and lifting all the way off, it will still keep the throttle position open for a beat longer. I already did a compression test months ago and all good, but didn't do a leak down until now. so did it and all cylinders are good, largest leak was 3%. with my limited knowledge of the operation of this DME, it seem there is a wastegate control issue.