Hello I'm new to this site and new to mini's. I bought my 2010 mini cooper s about a week ago. When I first started it up at the garage/dealer it had a bit of a rough idle but smoothed out after it ran for a couple minutes, figured it was just because it's been sitting for a bit and the temperature was on the colder side. A little background on the car, it has a cold air intake, full exhaust, front mount intercooler, blow off valve and the JCW tuning kit. Car runs good but every now and then it has a bit of a idle flutter, usually when it's colder outside and a couple days ago the engine light came on with a P1497. If gone through some threads and a few said valve cover/gasket cracked leaking but I don't hear any hissing. Haven't had a chance to get it smoked to see if it's got a small leak. A lot of people complain it's loosing power but mine seems to still have lots of juice. Just wondering if anyone has much experience with similar set ups. I'd like to learn more about what I'm dealing with in regards to the car.