I was just about to get some 40 series flowmasters for my rig (not delta flows) and now noticed the super 40's which claim less interior noise but deeper and louder exterior tone and higher hp ratings. anyone have any insight to this??
03 Mustang GT
K&n Fipk C&L upper elbow
bbk 70mm t.b.
BBK o/r x pipe
3.73
03 Mustang GT
K&n Fipk C&L upper elbow
bbk 70mm t.b.
BBK o/r x pipe
3.73



but if i had to, super40s
if you don't know what it sounds like then STFU!! I have the 'packs and it sounds nothing like a "truck"! now if you match it with the wron midpipe i.e. MRT O/R H it will(had it on for about 1 hour), but not with the pro chamber or the stock pipe.