Hi, new to the forum. I just bought a used Boulevard, my first cruiser. It has Cobra straight pipes on it and although I don't necessarily dislike how loud they are what concerns me is how un-tuned they sound especially while down shifting. I have no idea what was done when the pipes were added. When you do add pipes such as the Cobra pipes is there any additional engine tuning required? I have a feeling the kid just bolted them on.