I had the same thoughts, but installed an SLP cat back anyway. Most cat backs are not as loud as straigh pipes on Harleys, so unless the cop is a noise pollution addict you should not have any problems. Just the other day I was driving through a speed trap (let off the gas, sure, it gives off a nasty snap crackle pop) I had to stop anyway since I was approaching a red light. Along comes a modified Honda Prelude , the driver was probably more interested in catching up to me than looking at the surroundings because he really got the Officers attention. He also got the ticket too.

They don't paint those white lines across the road for nothing. Always know the road, where they sit, and if you are not paying attention dirve the speed limit. My exhaust is loud, but I never had any problems with getting pulled over. I have been followed on several occasions, but so far not pulled over.