It has been a couple of years now since these Active Fuel Management motors have been around and the exhaust companies are developing mufflers 'tuned' for this engine to combat the drone when it switches to 4 cylinder.

Which muffler has the most 'normal' sound in 4 cylinder mode?

I have seen catback kits from Gibson, Hearthrob, no kit yet for RC/SB from Magnaflow or Corsa.

Who has heard or owns one of the 'tuned' mufflers?

I want a great sounding truck but I have heard nothing but regretful stories from others about the goofy sounding 4 cylinder mode.

 

corsa, you can go to their website and it says even for the v4 mode. I am going to be putting one on when I get the $$

 

I have headers and magnaflow on mine.
It does sound weird in v4 mode, doesn't resonate but it has a pulse to it as well as
a rash when it changes modes.
Not too annoying in city driving but could be on a road trip. alteast I have hpt
and can turn dod if i want.