Welcome...you sound frustrated..OK, first you need to provide us with a couple more details.
1. The year and trim level of your Bonneville
2. Do you have an aftermarket intake or the standard factory airbox?
3. Has your MAF screen been removed?
4. Has the airbox been "gutted"
Have you owned the car for a while? was it owned by someone else and you just bought it? Can you easily identify parts under the hood? Have you done any modifications to the car that would affect air intake?
OK...that should cover it..sorry about the questions but it will really us determine what is wrong and we can get you back on the road