Well, the Hellcat motor certainly has potential – as this video shows – and tuners haven’t even tapped into the ECU’s full potential yet.

In this example, this Challenger Hellcat makes 886HP on a simple E85 tune, and about 753 Horsepower to the rear wheels. Can you imagine this car with a pulley swap, full exhaust and proper tune? We might be just months away from seeing 1000RWHP Hellcat Challengers and Chargers roaming the street.

We just hope these Hellcats don’t spin the earth out of orbit when they accelerate.

Interesting point about these cars: Tuners cannot currently tune the transmission. This is the same issue they had with the NAG1 Transmission.

To this day no one can just jump into the TCM, and that transmission has been around since 2005.

The car shifts around 6,300 RPM’s. That RPM is definitely not flat lined at fuel shut off. So we wouldd like to see 7,000 RPM, but the valvetrain geometry on modern Hemi’s is not really built to handle that from the factory. Simply put, they can’t raise the shift points to say 6,600-6,800 RPM’s to utilize the extra power.

What is most shocking to us is that the 2013/14 5.8L (662HP) GT500 with CAI, Full Exhaust, Pullies, and a tune – put done nearly 100 less RWHP, that this essentially stock Hellcat car did with a E85 tune – on the same dyno! Very impressive: