Sound difference between Cat 2 delete/factory exhaust vs Tubi

While I have the car at Norwood's we are investigating the FabSpeed Cat 2 deletion and factory exhaust vs the Tubi exhaust that I have on here now. We could always sell the Tubi exhaust and recover most of the cost. I've noticed a little drone around 65-80 mph which isn't really bad, but is an annoyance. Anybody who's done this before, can you comment on the differences please?

 

I removed the sec.
cat and love the sound............Rob-0

 

Using factory exhaust? There's no drone is there?

 

No drone with factory exhaust and secondary cat delete.

 

That's great! Planning on having that done at Norwood's when we take it in there next time.

 

[ame]http://www.youtube.com/watch?v=jD31LHkA7JQ[/ame]

You're going to love it

 

The way 599's are supposed to sound!