Hi guys,
Have a 2006 WRX remapped by Duncan. Currently feels slightly less powerful and seems to hestitate a little more than usual when I plant my foot down.

Getting a little suck sound when I press the throttle..seems to be behind the intercooler...ish (could be any pipe near there).

Small press = small suck, large press = large suck. Can't be too sure if it's continuous.

I did install Samco y pipe a while ago...could this be leaking and would a leak around the intercooler have a bearing on boost pressure?
Cheers,
Andy

 

Any leak=lower boost pressure. Check all pipes one is probably loose or split