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It's late and I can't get any video of my car, but I did the cheapest mod available by paying a custom muffler shop $200 to switch my 3.0si muffler with a customized fiberglass one, while keeping my orginal muffler tips. The look from the outside is the same, but the sound of the car increased 300% when I accelerate. Oddly, once I let go of the gas paddle, the car makes this farting noise that sound like "pop pop pop". Is this normal? I was told by the muffler guy that this is normal and increased performance by 6%, but what do you guys think? Also, I love the acceleration noise, but does the poping noise make the car sound cheap?. Anyways please help answer my question and tell me what you think.