Ok. So it sounds as though I have an exhaust leak, pre-cat. The cat is mid body on the car, so imagine a sound coming from somewhere about underneath the console's position on the car, maybe a bit further. It makes popping noises and such, and also is probably causing un-needed turbulence in the exhaust flow, resulting in a loss of horsepower. I have noticed a loss in horsepower, especially in the top end of my powerband. Seeing as how I do not have a steady income, what would you guys suggest as my best/cheapest fix for this problem?