I recently swapped in a new (used) motor with lower miles after bent valves from broken timing belt. Motor runs fine, but the car is sluggish from a stop. I've tried adjusting the wastegate actuator to introduce boost sooner, but I don't want to hurt anything by turning it up too much. Also, i swear sometimes it feels like it's downshifting at about 10-15mph then acceleration is much better. PnP switch? Something else? Any guidance is appreciated. I did also replace the B shift solenoid to correct a P0775 (I think that was the code)

98 V70 GLT