I have read MANY threads regarding the exhaust. Curious if someone has the Mopar Race Exhaust? DO you HAVE to upgrade with the cam and pcm or can it be just the exhaust and no cats? How much louder is the system with NO cats? Price seems reasonable.
I personally don’t have this exhaust but I did help install one on my friends Viper, below are my thoughts.
1st You don’t need to upgrade/replace the Cam and/or PCM with this exh. With the cats removed he does have a gas smell or byproduct when sitting at a red-light etc… The fumes waft throughout.
2nd The louder question is subjective to the Owner – Operator…
His vehicle is definitely louder then stock. However I am unable to provide a quantitative answer in the form of a dB level to represent the "How Much Louder" answer to your question. (Best guess would be + 2x) The Mopar system also has a “Drone”, or should I say his system has a drone. I personally think the Mopar is to abrasive (Loud) for my taste at 45 yrs old. I enjoy driving my Viper
and "Loud" would detract from the enjoyment... Just my thoughts…