Change from pods to the breadbox was a noticeable improvement on my '77 550 K3. My experience was all the popping and gurgling on deceleration went away as soon as I switched. Also, smoother acceleration through the RPM range, where previously it would sputter quite a bit at lower RPM. Others in the forum can no doubt give you the technical reasons why this may be, but my practical experience is generally a much smoother throttle response. I would definitely not go back to pods. FYI: Steel Dragon: Good guys - good communication.