Originally Posted by Werks

When it comes to break in there realy is no right or wrong. The bestsystem is the one that works best for you. After all they all acomplis the same thing, basicaly wearing your engine in. I recommend the system that I do because it is gentle on the engine and at the same time basically allows you to tune your engine properly at the same time, it's kinda a no brainer. Some people prefer heat cycle methods but my concern about that is if you are ideling an engine at 200 degrees, how lean is it actualy? In my oppinion probably too lean. Reality of the matter is that even on a fully broken in engine, I highly doubt that I would ever have it tuned so lean that I would see 200 degrees on the box! If I did that would probably equate to 250 or so under load and to me that is too lean!