Berk Vs F.I cat back system question?

KEVTEX

Tony, here are some quotes from your customers and lastly from you on the subject of drone with FI exhaust.

“The only drone sound I heard is when your at the 2.5 to 3k rpm range”
“I have drone around the 2-3K rpm range.”
“Tony , I have the FI cbe with 18'' res and carbon and really like the looks quality and sound (except the 2000-2300 drone) “
“The only issue I notice so far is the drone at 2k while cruising…”
“the drone around 2-3k RPM is my biggest issue”
“want to calm the drone down some while at 2K”

“Now me personally I do not feel that the drone at 2000-2400 RPM's is obtrusive.”
F.I.Inc (Tony )

2000-2400rpm=61-74mph=legal cruising speed