| Are all 4 cyclinders noisy engines compared to 6's? I have a 93 318is, and the engine sounds so noisy... also, when i have driven the car and the engine is hot, i pull up and park the car and leave it to idle and the exhaustsound is a put put put put note , not a smooth exhaust note when idling...is this normal for 4 cyclinders with stock exhaust system? |