strange noise coming on boost blobeye 53plate
 

I have a blobeye 53 plate, had some work done a few months back new boost pipes re map etc. have noticed a strange noise the last few weeks when i come on boost like a slight squeal sound almost like a pipe split ? the only pipe that hasn't been changed is the intake to the turbo, this looks abit weak but still sounds like its coming from Intercooler area ? seams to boost fine and I have changed the dump valves to clear that up.
Also has a funny smell of fumes after I have come on boost, is it possible my intercooler could be ****ed OR any notorious vac pipes anyone knows of that fails ??
Any help will be great. thanks