I too have the regular magnaflow catback 1571 and the drone is driving me crazy.
I also have a vert (2003 GT) and from all of the research I have been doing, the vert+ automatic + after market exhaust=drone...
I have the stock H-pipe BTW.
I did a LOT of research before buying this system because I didn't want a loud system and i didn't want drone. I am very impressed with the way the car sounds when either cruising around town because it is a nice quiet rumble.
However, I drive at 65-70mph on the highway, and the drone is very annoying.
In fact under load, anything from 1850-2150 or so is horrid.
One thing I will say is the SOP dyno says the car is faster and believe it or not, my mileage has increased by 2mpg!
So anyhow, I am wondering what solution you came up with?
The Corral fix looks sick! It is supposed to be 100 percent cure but I wonder about those tubes knocking around under there and how it will effect the longetivity of the system.
IOW is it really worth it?
I just ordered a set of Bassani inserts for the 3.5 inch tips because from what I have read, they are supposed to eliminate 99 percent of the drone.
Another person drilled a 3/8inch hole after the muffler but before the tailpipe and supposedly that fixed the problem?
Comments?
I might just end up getting either the FRPP M51 system OR the Steeda catback which supposedly does not drone.
So how did you solve the problem?