OK so I was on my way this morning to ge that 55 gallon drum cut off and have a piece of pipe installed in place of it, when the guy at speedy muffler said that it may cause a problem and throw the check engine light to come on, he siad there would be no back pressure on the system. So i told him no thanks and left........ WILL THIS HAPPEN?Hope someone can let m eknow, I would like to get the muffler cut off ASAP. Thanks