whistle or spool

Hi guys, This is my second thread on here (woo!) I need some information & that's why I am posting here. Last time I did & got tons of help! I am hoping for same again! ? Here we go. So 3 days ago I got my DPF removed (physically) and today I got the car mapped out at a tuning place. They did...

well I took Greesha out for a spin last night after logging his car, and gave the car a good hammering in every gear, which has now caused a problem upon putting your foot down in low gears, you can really hear the turbo spool and almost a whistle to it (as if its over spooling), with a loss...