How long should it take for your oil pressure to settle down? In mornings or when engine is cold, my rev's sit at around 1200rpm, then go down to around 800rpm. Car also stinks of fuel!!! Had my AFM checked out, air/fuel ratios were spot-on (factory specs)...
To add to this, which I think may be a different problem, if I rev my anywhere past 1500rpm, then let it off, when it passes 1200rpm the car sort of shudders... Anyone experience something like this?
Car is R33 GTST, using Mobil 1 oil.