Help needed

[V50psa]

folks really hope someone can help me. I bought a 2009 v50 with the 1.6d engine recently. I knew mine was a bit sluggish and thought that was normal for such a big car with smsll enginr. But after driving another one I realised just how slow it was. Like really slow(my wifes 1.4 golf feels faster) Its as if there is no turbo,there is no feeling of turbo coming into boost or anything.
Anyway I had a quick look at the pipework from the turbo and spotted an oil leak coming from the hard intercooler hose connected directly to the turbo so I tightened up the bolts as they seemed a bit loose. That is litteraly all i did so I start the car to take it for a spin and it comes up on dash reduced performance mode. But the car now has way more power than it did? I can hear (which i couldnt before)and feel the turbo spooling up. The turbo is properly loud which I know it shouldn't be. The car feels like it has more than the 110bhp it's supposed to have. So my question for you is why is it saying reduced performance if I have more power and why has the turbo become so loud? All from just tightening a bolt. Hopefully someone can help as I can't really afford to bring it to the garage just after buying it. Hopefully I havnt bought an absolute lemon needing a new turbo

[V50psa]

So a quick update. Car is back to having a no power but the reduced engine performance warning remains. Now when I say no power I don't mean limp mode slow just feels very underpowered.
Any help on where to look would be greatly appreciated.

[Clan]

Originally Posted by V50psa

So a quick update. Car is back to having a no power but the reduced engine performance warning remains. Now when I say no power I don't mean limp mode slow just feels very underpowered.
Any help on where to look would be greatly appreciated.

It could be a whole host of things , best get it diagnosed by a dealer who knows the car ..