Listen To The Incredible Exhaust Note Of The New Dodge Challenger SRT Demon

Dodge knows that developing a drag-tuned muscle car would be nothing without a proper sound, which is why they fitted the Challenger SRT Demon with an advanced torque reserve launch system.

Revealed in the latest teaser of the vehicle, the “advanced torque reserve launch system” is another first for a production car, contributing to the decibels and the deep tone produced by the exhaust system.

But what exactly is ‘torque reserve’? Well, according to Dodge, the system allows more airflow through the engine before launch, increasing supercharger rpm without torque overwhelming the brakes and spinning the tires.

It kicks in when the Demon’s Launch Mode is active and the powertrain’s rpm are over 1,000, and does two things: it closes the bypass valve on the supercharger, and manages fuel flow to cylinders and alters spark timing.

With torque reserve managing the engine output, the supercharged HEMI engine can build boost pressure before leaving the starting line and reach maximum boost pressure quicker, taking full advantage of the SRT Demon’s increased weight transfer and increased contact patch drag radials to reduce 60-foot times“, Dodge writes.

As usual, the automaker has dropped yet another Easter Egg in the latest installment of the teasing campaign, in the form of a rear license plate that writes “3.9+221=405”. In Dodge math, this could mean just about anything, and until we learn some official output and performance numbers, your guess is as good as ours as to what this means.

PHOTO GALLERY

VIDEO

  • JD

    3.9 is the acceleration from 0 to 60, I guess.
    221 may be the exit speed at 1/4 mile
    405 may be the number of a special edition

    • Craig

      The thing is…. the Hellcat already gets to 60 in 3.7 seconds and its 1/4 mile exit speed is 226 mph. [On street legal drag radials] But I suppose Dodge could be playing it safe numbers wise. As for 405 …. click on the link. Who knows!!

      http://www.carscoops.com/2012/12/ultimate-auto-dodge-challenger-srt-8.html

    • Mac

      Hey JD, might want to rethink that 0-60 time. The Hellcat already has a 0-60 time of 3.6, why would the Demon be slower. Just sayin’ . . . .

    • Kaisuke971

      It was already written 3.0s on the charts for the 0 to 60 in the last video.

  • Six_Tymes

    it does sound great. with all the hype surrounding this, it better keep the power down, but how? will the slicks be enough?

  • Kaisuke971

    People are gonna be massively disappointed with this car. Dodge is hyping it up too much, and the public is starting to expect things that don’t even make sense. I’ve seen people suggesting that 3.9s is the 0-100mph time…

    For reference, an F1 car does it in about 4s flat.

    • brn

      Enthusiasts will be disappointed. The public hasn’t noticed.

  • Craig

    Just as it takes off – I hear 4 chirps. AWD maybe?!

  • Elite59

    Just a guess, like everyone else: 3.9 liter motor (6 cyl), cylinder head Intake valve size is 221, and it produces 405 HP. I know everyone is speculating on a high HP V8, but what if it is an all wheel drive 6 cylinder, with the special traction control, it could launch out of the hole like a jack rabbit and run a very respectable 1/4 mile time.

  • Karl

    Let’s see,how many ways can lipstick be applied on a pig! Instead of coming with a new generation of modern lighter cars FCA insists on playing catch up and the clown. How old is the current model again? Sad,real pathetic indeed. R.I.P FCA💀

    • Six Thousand Times

      2009 technically but on a 1990s M-B platform.

      • Karl

        That’s damn sad to say the least!

        • Six Thousand Times

          And that Hellcat engine has a cast-iron block.

          • Karl

            Time for a all new model!

          • steve

            If they can keep selling them in good numbers, FCA is winning. The amortization of R&D of a vehicle is amazing after 8 years with only minor changes… They are making a fortune on this car…

          • Karl

            Time to replace the archaic fat pig!

  • Adam Coats

    There is no way that 221 is the trap speed for the 1/4 mile. That is not even in the realm of street cars or lightly modified drag cars. I assume it could be the top speed, but that seems quite high for something that does not have the best drag coefficient.

  • Obsequious Lickspittle

    Proper farty sounding just above idle.

  • Axel Cortez

    0-100 km/h 3.9 trap speed in km/h 221 and 405meters

    0-60 should be lower than 3.9
    221km/h is 137mph
    405m is a quarter of a mile

    • Creepy.Joe.Biden

      You may have figured it out, but the 3.9 doesn’t make sense.

  • Donald neizer

    3.9 is the size of the supercharger- 221 is how much hp it is above the hellcat- and 405 cubic inches

  • John Caprai

    I agree with Donald neizer… 3.9 Liter SC, top Speed is 221, or where you will not get above 3.9 Mph is the 405 in So Cal… 🙂

  • Six Thousand Times

    I understand that it’s pretty much just an even bigger supercharger. Something like 2.6 litres. Cheap tech for FCA.

  • Big Black Duck

    my favorite exhaust notes belonged the Vulcan and LFA and now this

  • ChrisInIL
Hyundai’s Pickup Could Get A Ranger Raptor-Rivaling Variant

A Hyundai pickup with the i30 N’s 2.0-liter turbo four-cylinder and close to 300 HP could be very fun indeed.

This Chevy Camaro Has Turned To The Dark Side, Sith Lords Don’t Approve

Underneath this badly executed body kit, which comes bundled with all sorts of unusual add-ons, lies a sixth-gen Camaro.

V8-Powered Ford Fusion With 450 HP And RWD Is The Closest Thing To A Mustang Sedan

Not content with the stock 325 HP twin-turbo V6, the owner of this saloon fitted a tuned Coyote engine and a 2007 ‘Stang GT500 transmission.

Kevin Hart’s Plymouth Barracuda Crash Investigated By Californian Authorities

The California Highway Patrol may recommend modified cars like Hart’s are fitted with five-point safety harnesses.

2020 Genesis G90 Vs. 2019 Mercedes S-Class: Underdog Takes On Top Dog

The 2020 G90 is fantastic value for money, but is it good enough to take on the luxury segment’s benchmark?.

Here’s a Close Look At The ID.3, Volkswagen’s Most Important New Car In Many Decades

The all-new compact electric hatchback is available in three different battery and electric motor configurations.

Mercedes SL 73 AMG: Rarer Than A Pagani Zonda And The Coolest R129 Of Them All

If you like 1990s AMGs, this SL 73 is the pick of the decade, packing a healthy 525 HP and being made in no more than 50 examples .

What Is BMW Testing With This M8 Prototype At The Nurburgring?

One possibility is that it’s an even more hardcore variant of the Competition, and another that the rear wing is going to be offered as an M Performance part.

Bugatti CEO Reveals More Track-Focused Chiron Variants Are Coming

Now that it has made a point about its hypercar’s top speed with the 300+, Bugatti will turn its attention to other aspects like power-to-weight ratio and ultimate handling.

Check Out This Frosted Glass Blue Audi R8 Coupe With A Dual-Tone Interior

Adding an Audi Exclusive color to your R8 V10 Coupe will cost you nearly $4k in the States for a matte finish – otherwise, you’re looking at close to $7k.