I recently noticed my mufflers on my 97 cobra had rusted out. I have had the car since 03 and always loved the sound and tone. Apparently it had flowmaster 40 series on it so I decided to go with the same since I was already happy with the sound. I have only driven the car a little bit so far but am disappointed with the new sound. Sounds a bit quiet for me. I never wanted an obnoxious or super aggressive sound but this is a little weak for me. Could there possibly be a break in period? Or something be wrong here? If so, these mufflers will not last with me. Any recommendations?? Everything out there seems super aggressive. Thanks in advance for your help..