The latest Dodge Challenger SRT Demon teaser has revealed the car will have a special ‘torque reserve’ system that will enable optimal engine torque for hard launches at the drag strip.
The ‘torque reserve’ system, as Dodge calls it, essentially works like an MSD 2 Step ignition. The system comes on automatically when Launch Mode is engaged and limits the engine speed when building revs. This allows for the supercharger to be “pre-loaded” with boost without the engine power overriding the rear brakes and allowing the car to creep forward.
“To balance engine rpm and torque, the Challenger SRT Demon’s powertrain controller will briefly cut fuel flow to selected cylinders.” Dodge says. “This creates the noticeable change in the exhaust tone. The controller also advances or retards the ignition timing to fine-tune the engine rpm/torque balance.”
“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.”
The teaser video for the torque reserve system, embedded above, also shows a Michigan license plate on the Demon with a cryptic ‘3.8+221=405’ number sequence. We haven’t a clue what that could mean, so if you want to wager a guess, feel free to do so in the comments below.