[vector1]

If there is no load on the engine it would be the same as cruising, lean is not going to hurt anything. If you put a load on the engine that is a different story. If you are making a sweeper and just cruising through, or coasting, and not accelerating, I wouldn't worry about it, it would be similar to getting off the accelerator going into a corner, but not as much. Just another way to look at it. If it is lean to the point of missing and upsetting the car, you need to find out where you are in the carb circuit and richen it a bit.