I have a question about my car. I installed an Injen CAI
3 months ago and since then my car has been acting funny. My exhaust sputters like a semi-auto handgun, and sometimes when I turn my car on it smells like my fuel smells kinda weird. What is knocking by the way? what does it sound like? Because if it sounds like a tremble or bass on my stereo that's what I hear. My car also trembles during idle. Can you guys give answers to what's wrong with my car, and a solution as well.