Ok I've been looking for days and haven't been able to find a solid answer. So I registered just to ask. And is there is a thread please just point me in the right direction. Ok here's the deal. I bought a 2006 s60R and it already has some kind of exhaust on it. It had a cel on. It was the mas. I cleaned it and put it back in because it was really dirty. Cel went away. .. for a day. Came back on saying fuel pressure which I believe was p0089 code. My question is are these really faulty sensors or could my car need a tune. I have no idea how to tell if it already had a tune. I got no info on the car at all. It seems to drive fine but I don't really know what is suppose to drive like. Any info will really help. Tia

 

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Are you using a stock air box or has it been modified?