[john]

You can run it venting. You may get bad idle and a CEL code though. I have seen cars vent fine, no idle problems and no CEL, and I have seen others that do not idle and throw a CEL after a while. Put it on and see how you like it and how your car takes it. It is not going to hurt anything at all. If the CEL comes on and you are going to take the bov off, just reset the computer and swap them. BTW, a CEL is just for fuel trim malfuntion. Not something VERY important. I know a few people who drive around with it on.