I've got a 88 M5, 170K, and recently it's been missing out at start-up, when the car is cold, and it goes away in 60-90 secs. It's a steady miss. It's got great power, and no other issues or changes. I've searched the archives and my guess would be dirty/stuck injectors, or maybe the ICV valve. Any other ideas/experiences? Also, where is the icv exactly? Thanks for any input...