I wonder if everyone who has the Magnaflow exhaust has the same situation? I have to clean the inside of the tips after everytime I drive the SRT due to them looking pretty dirty. Their black inside. Is this normal? Is it todays fuel? I didn't disconnect the battery when installing the exhaust system.(actually had a muffler shop do it). If I did that now would that take care of it? I did go alittle fast today getting on the freeway. Can we say 120mph by the end of the on ramp? OOPS! I know, pretty stupid and careless of me. Could this be because of that? Is the engine running too rich? Thanks. I worry about crap like this all of the time. Thanks again.