Recently done the n249 n112 sai delete on my 1.8t
before the deletes it was hitting 22psi peak and holding 18psi afterwards i noticed that i had lost 2psi of boost off both peak and the rest of the gear and today seems to of got worse as it won't go past 17psi and in third it dropped off to hold 10psi!
Is this likely to be a boost leak or something else like weak actuator?
the short pipe that joins the pancake pipe to the intercooler is oily as well
Any help appreciated