Jalopnik says that an unnamed source within Fiat Chrysler Automobiles told it that the Hellcat was having problems meeting emissions standards at its 707-horsepower tune. The person claimed that the automaker has been testing the V8 with different types of sensors, possibly to make it a bit cleaner in the future. Autoblog spoke to SRT spokesperson Dan Reid, and he said about the claimed poor emissions, "It's totally speculation."
The source also claimed that the Hellcat had been dynoed at a monumental 825 horsepower, internally. Based on the other rumor, though, it's hard to imagine the engine being emissions compliant like that. Autoblog also asked Reid about this speculation about more power and was told, "They are totally speculating about that."
Of course, Reid's implication of speculation, in both cases, doesn't constitute a denial exactly, either. Suffice it to say that we expect more an firmer information to crop up on both fronts, before to long.
In fact, the much-anticipated muscle car will start arriving at dealers in just a few weeks, which should open the door to transparency on both issues. Waiting really is the hardest part.