hi Guys

i really need some good advise about my car and the noise that i experience a while ago.

after start i can hear a hard blow off or whiz from under the bonnet and the noise coming from where`s the intercooler / turbo.if i open the bonnet i can see some oil around the front panel right side of front grill.when this happening the car pulls right but then just gone the power no noise anymore slow on change gear /automatic/ and really poor performance.

it always happen every cold start last for a few minutes then all gone but the car feels soo bad.the noise like wind blow i think any of my intercooler pipe has a hole on it?

is it possible ? or anything to do with a turbo because when blow off car pulls as it should but when get a bit hotter the engine it all goes noise,power,reformance

if any of you guys can get me closer to what it could be pls let me know

thanks,kuntics1