I got the magnaflow exhaust installed. 22 inch. With the cai too. Love the sound mostly. But there are times like at idle, or at low speeds that it makes irritating sounds. I went to the installation shop. They stated that it needs to fill the inside of the exhaust with carbon deposits, taking roughly 1500 miles. And that sound should lesson. They said regardless, they will stand behind it. Is this true, or bs? I'm also wondering if it may be slightly loose creating a vibration.
