It's been rumored from the very beginning, and today, it's confirmed: The 2018 Dodge Challenger SRT Demon will have a special mode and engine tuning to allow the car to take full advantage of 100+ octane race gas. It's the world's first factory production car to offer such a mode, but accessing it will be a little tricky.
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As we've told you before, each new 2018 Demon comes with a Demon Crate, a big bin of goodies specially designed to help Demon owners optimize their ultra-Hellcats for the drag strip. Along with the jack and cordless impact wrench to swap on those skinny front wheels and tires, the crate will include a new Powertrain Control Module (PCM) calibrated for premium unleaded race gasoline, along with a new center console switch cluster that includes the High Octane fuel button.
Filling up with 100+ octane race gas will allow the supercharged 6.2-liter Hemi to run more aggressive ignition timing, which Dodge promises will lead to "big changes in elapsed time" at the drag strip. Dual fuel pumps and bigger fuel injectors allow higher fuel flow compared to the regular Hellcat. The car only has one fuel tank, making it all but inevitable that some 91-octane street fuel will mix in with the race gas; if the engine's knock sensors detect that the effective octane rating is not sufficient for High Octane mode, a warning will tell the driver to switch to the standard fuel setting.
In today's announcement, Dodge also confirmed that the Demon Crate will be shipped to buyers separately, and implies that installing the upgraded PCM and switch panel will be the owner's task. It's unclear whether this is required for regulatory purposes, but it does mean you likely won't be able to fill up with 100+ octane race fuel the moment you drive off the dealership lot in your new Demon. No matter: The final product should be worth the wait.
The 2018 Dodge Challenger SRT Demon makes its official debut at the 2017 New York International Auto Show on April 11th. Until then, get yourself caught up on everything we know so far about the mega Hellcat.