Hi,

Just got the car back from the garage after having a de cat up pipe, de cat down pipe and walbro fuel pump put on ready for a remap.

Driven it quickly round the block today and it's making a screeching noise when the boost comes in...any ideas what this might be?

It's a blob eye Wrx.

 

Up pipe gasket

 

I thought it might be, the old ones were put back on in error rather than the new ones...looks like it'll be coming back off then. Cheers mate