Friday, June 28, 2019

a Mopar OEM 2.75 inch dual mode exhaust system allows the motor to roar when being driven hard, while being a little quieter when gently used or slowly cruising at low idle

The sound of these exhaust systems on the 2015-2016 Challenger and Charger Scat Packs, and Hellcats, has become one of the simplest features to envy since the Ferrari or Lamborghini wide open exhaust when the pedal is floored.

a pair of electronic valves located near the rear of the vehicle to control the level of the exhaust noise. At idle and in light throttle situations, the valves are in their closed position to keep sound levels down. This also helps to reduce “drone” when cruising on the highway, but when you put the hammer down, the valves open and the exhaust gets a whole lot louder.

https://www.torquenews.com/106/all-2017-dodge-challenger-charger-hemi-cars-get-dual-mode-exhaust

I expect a person could weld in the exhaust flaps, then wire the controllers onto any muscle car and go from a purr to a roar at will, or on command.

Just a thought.

Or maybe some company has already made such a thing, for inline with the mufflers, as I already know that there are weld on y pipes to dump all the exhaust before the mufflers for drag racing, to pick up 10-20 horsepower on the fly when off city streets

6 comments:

  1. They do for Maseratis. Was just reading about it this evening on the Ghibli Reddit.

    ReplyDelete
    Replies
    1. Thank you! I knew it was some expensive Italian cars... I can't remember everything, but I recall some hints to get me started in the right direction

      Delete
  2. There are several..
    https://www.summitracing.com/parts/hok-11052hkr?seid=srese1&gclid=CjwKCAjwmNzoBRBOEiwAr2V27YtgYF2g3uZW7rKzRIS5U8kDJ01ehcX67zuJn1PmWDjktXvcqipvSxoC4bAQAvD_BwE

    ReplyDelete
    Replies
    1. Yes, those are the electric dumps I mentioned... but I was posting about the noise dampening devices that only cut down on the amount going through the mufflers, instead of cut outs. I think these electric cut outs are fantastic for drag racing, and picking up a few horsepower, but the noise dampeners are fantastic for keeping the noise down around cops!

      Delete
  3. corvettes have had that for years
    two different passageways in the muffler, with a flap that opens when you floor it

    ReplyDelete
  4. Anonymous11:34 PM

    yep, my 2013 camaro SS has this too..

    ReplyDelete