I wouldnt do a cam then. if you want to make it louder go with new mufflers.
Oh maybe you're right and it was just the intake i heard lol.
You could always make sounds while your driving, but make sure your windows are down so others can hear you.
poke a hole into your mufller, not recomended but makes your car loud
or you can always just intall these Quick Time DUAL Low Profile Oval Electric Exhaust Cutout - GPEXH - PFYC.com
if your just looking for noise