Yes and as posted there are parts that you use to make it work, with said fuel, if it was simply a higher octane then everyone would be able to gain 32 horsepower that easy. Not saying that the higher octane isn't part of getting to 840 but from the way Dodge has made it sound, is you need the crate parts to also do this. The records the car broke achieved it on the 840, and not the 808 off the lot.
2.1s wasn't a typo, it's 0-60 with rollout.
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Launching from a stop to 60 miles per hour takes just 2.3 seconds and since some automakers list their 0-60 times “with rollout,” Dodge did that too – clicking off a 2.1-second run. Launching from a stop and running up to 100mph only takes 5.1 seconds; and the Demon covers the quarter mile in just 9.65 seconds.
An NHRA-certified time of 9.65 at 140 miles per hour makes the 2018 Dodge Challenger SRT Demon the quickest production road car in the world, period. This knocks off the Bugatti Veyron’s 6-year old record of 9.70, so there is literally no other street car in the world which will turn a quicker quarter mile time in stock form.
Also, while those record numbers were achieved with the skinny wheels up front and the high octane race fuel computer from the Demon crate, the numbers aren’t all that bad in the Demon's basic form. With the stock computer system running on premium gasoline (91+) and the huge 315 Nittos up front, the new supercharged Challenger will still lift the front wheels off of the ground on launch and it will still run a 9-second quarter mile - 9.90 to be exact.
Also, as long as we are talking numbers, we should point out that during testing of the Demon's Eco mode, which starts the car in 2nd gear and limits power to just 500hp, it still ran an 11.59.
While the Demon doesn’t come with a front passenger seat, a rear seat, or trunk trim from the factory, buyers can add each of those items as an option for a dollar. The front passenger seat costs $1, the back seat costs $1, and the trunk trim costs $1. That Demon Crate with the skinny front wheels, the tools, the high performance PCM, the new switch panel and a few other odds and ends also costs $1, so if you check all of the boxes for those items, it adds $4 to the final price.
Each Demon comes with a leather bound book which the owner receives when the order is placed with FCA by the dealership. This book explains all of the unique features, how things like the TransBrake, intercooler chiller, and the after-run cooling system works, with hints of how to set up the drive mode system for the best possible quarter mile times. This book also includes a race log and a coupon which allows the Demon owner to order their Demon Crate from FCA.
The Crate is sent directly to the owner’s home (or wherever they want it sent), so the dealership isn’t involved in that aspect and it is during this phase where Dodge is doing something interesting to try to prevent greedy dealerships from ordering a car and adding a huge markup without a buyer waiting.
When the Demon buyer orders his or her new Mopar muscle car, that person’s name is applied to the Demon Crate, which has a matching VIN to the car. This cannot be ordered blank, so dealerships will be forced to provide a name and if they just put the dealership name or a generic name, it will make the car less attractive to some buyers. Dealers almost have to order the car with an actual buyer lined up, which should help curb the massive markups.
Dodge will build 3,300 of the 2018 Dodge Challenger Demons — 3,000 for the US and 300 for Canada. Prior to the first batch of orders, every dealership in the US and Canada will be told exactly how many Demons they will be getting. This way, dealerships won’t be able to tell prospective buyers that they “might get a car”, since the dealership will know exactly how many they will get before the first car reaches an owner.
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Source :
http://www.allpar.com/cars/dodge/challenger/demon.html