OK, relax a second here. First of all, have you checked your oil level and are you loosing any? Second, if it is smoking out the end of the pipe, you probably are not leaking it there, it is coming from the motor. Third, what color/smell does the smoke have?
Also take into account that most aftermarket exhaust systems will smoke the first couple of times you ride with them installed and sometimes need a good hard run to burn off the oils from production. In addition, your combination of the pipe and air fliter could have you running lean causing the pipe to get hotter than normal and burning off some of the packing material.
One other thing, don't rev the bike when you start it. Let it warm up a little before you get on it.
Rarely is the question stupid, but sometimes the answer is
you need to run everything you read online through your own personal BS meter to determine if it makes sense to you.