Thread: CG vs Akrapovic
View Single Post
      12-21-2014, 09:22 AM   #14
CG Precision
Lieutenant
CG Precision's Avatar
United_States
94
Rep
425
Posts

Drives: 2013 BMW 335i
Join Date: Feb 2014
Location: Tucson AZ

iTrader: (0)

Hi guys,

In case you are not familiar with our setup, hopefully this will answer some questions.

- Our system was designed as the only true 3.5" system from the cat connection back, with no kinks or crushing of the piping. It comes with a CNC V band adapter flange to mate to the factory DP, but when used with our DP it fully eliminates the restriction of the factory size piping and becomes a true 4" to 3.5" exhaust system.

- We recently released our catless DP and will be releasing a superior flowing catted DP in the months to come, after we have finished our testing.

- Our system was designed with 3D exhaust flow simulation (see below) in both open and closed modes to create a very free flowing system with a sporty sound worthy of the racetrack when open but subtle and stealth while closed.

- Because we tune the muffler to have 15% of the exhaust gas, of certain sound frequencies, muffled when the exhaust valve is open, there is virtually no drone even when the valve is open (See flow analysis below)

- Like the Akrapovic, our system can use the factory Comfort, Sport / S+ settings.

- We have also engineered a controller for the electronic valve (the VSC-1) so you can open or close the valve any time you want.

Exhaust sound is subjective and everyone has their own favorite. If you are looking for a very racy sound, but not obnoxiously loud, with the highest flow possible, and ability to control the exhaust valve, we think you would really enjoy what our system offers. Good luck with your decision and your build! Here is the flow analysis:









Appreciate 1