Something so simple yet until you look at your own car you would have never imagined it. Sounds a bit over the top but I was amazed I hadn't spotted it on my own car. I have replaced turbo's on two Copens in the past, (both purchased broken due to oil like tar). I was just putting the front number plate back on today and realised whoever fitted the last plate put it so high it covered most of the inter-cooler. Covering the inter-cooler really doesn't do your car any good, please check yours.