I have a 2004 DRZ400 S with the 3x3 and DJ mod and am thinking about the FCR. I purchased but have not installed yet, a used FMF PowerCore IV Q pipe that consists of a mid pipe and silencer. I guess this pipe is no longer available so I do not know much about it power and noise wise. FMF told me it's 96 db which may be too much for my taste. I am considering a stock E pipe for my bike. Will the E pipe bolt right on or is the mounting point by the passenger foot peg a problem. I eliminated the pass. foot rest with a bracket from motobits. Is the E header of bigger diameter. Is there enough of a power increase to make the swap to a stock E pipe worth it. Thanks for any feedback.