loss of power

Hello I have 2017 vrs Octavia 2.0tdi I recently had stage 1 remap done on car which has made the car very enjoyable and feels great and a friend had told me to install induction kit and I did I didnt like the sound off it and the car felt weird with it and I reinstalled the old intake but now there isn’t much of a boost anymore and it’s very flat in 4th gear since still has the power but seems to take longer to kick in and I find myself that she is going up revs slightly quicker then normal there is no warning lights no faults has anyone got any ideas boost leak air problems anything at all? Thanks