What a Diablosport 5.7 Hemi Tuner Does to Your Engine
The 5.7 Hemi leaves the factory with calibrations designed to be conservative enough for any driver in any climate on any grade of gasoline. For the enthusiast who runs premium fuel and demands everything the engine can offer, those conservative factory settings represent performance that is never accessed. A Diablosport tuner for the 5.7 Hemi changes that directly.
Diablosport’s engineers spend significant time on the dyno developing tunes specifically for 5.7 Hemi applications across all the platforms where the engine lives: the Dodge Challenger, Dodge Charger, Ram 1500, and Dodge Durango among others. The result is a set of preloaded calibrations that optimize ignition timing, air-fuel ratio, and throttle mapping for the octane level being used. Running 93 octane with the 93 octane tune yields the most significant gains.
On a stock 5.7 Hemi, the Diablosport inTune i3 consistently produces gains of 14 to 18 rear-wheel horsepower and 18 lb-ft of torque on the preloaded 93 octane tune. More aggressive applications with the Trinity 2 and full custom tuning from a CMR calibrator can push gains to 20 to 35 rear-wheel horsepower depending on vehicle configuration and any supporting modifications.
Beyond raw power, the throttle response improvement is immediately noticeable from the first drive. The factory throttle mapping is intentionally dulled for comfort. The Diablosport tune sharpens throttle response so the engine reacts to accelerator input the way the driver intends rather than the way a committee of engineers decided was appropriate for the average consumer.
Additional adjustments available with the Diablosport 5.7 Hemi tuner include MDS (Multiple Displacement System) control, transmission shift point and firmness tuning, rev limiter adjustment, speed limiter removal, tire size calibration, and axle ratio calibration. The MDS control is particularly valued by Hemi owners who find the cylinder deactivation system intrusive during spirited driving.
What Changes with a Diablosport 5.7 Hemi Tune
- 14 to 35 additional rear-wheel horsepower depending on tune and modifications
- Optimized ignition timing for 91 and 93 octane fuel grades
- Improved throttle response from the first accelerator input
- MDS cylinder deactivation control for uninterrupted V8 feel
- Transmission shift point and shift firmness tuning
- Rev limiter and speed limiter adjustment
- Tire size and axle ratio recalibration
- OBD2 diagnostic code reading and clearing
Best Diablosport Tuners for 5.7 Hemi Vehicles
These are the most popular Diablosport tuner options for 5.7 Hemi-powered Dodge and Ram vehicles, from entry-level preloaded programmers to full custom tune setups.
DiabloSport 7102 Predator 2
A simple and reliable tuner, quick power increase, basic customization, and diagnostics all in one device.
DiabloSport PCM-DR576S15
An unlocked PCM, essential for RAM/HEMI tuning, is the basis for any DiabloSport firmware.
DiabloSport 7401 Predator 2
Increase power, improve response and make adjustments without complex custom tuning.
NEW DIABLOSPORT PULSAR LT ТUNER
The easiest way to gain complete control over your car without complex tuning.
Diablosport 5.7 Hemi Tuner FAQ
On a completely stock 5.7 Hemi running the preloaded 93 octane tune, a Diablosport inTune i3 typically adds around 14 to 18 rear-wheel horsepower and up to 18 lb-ft of torque. With a custom tune from a CMR calibrator, gains of 20 to 35 rear-wheel horsepower are achievable on a stock engine. Modified engines with supporting bolt-ons can see larger gains when paired with a custom calibration built for the specific combination.
Tuning can potentially affect the factory warranty. Under the Magnuson-Moss Warranty Act, a manufacturer cannot void a warranty simply because an aftermarket part or modification was installed. However, if a dealership can demonstrate that the modification caused a specific failure, they may deny warranty coverage for that component. Having the stock tune backed up on the Diablosport device and returning to stock before warranty service visits is the standard practice recommended by most tuning professionals.
MDS stands for Multiple Displacement System. It is Chrysler’s cylinder deactivation technology that shuts off four cylinders of the 5.7 Hemi at light throttle and low-speed cruising to improve fuel economy. While MDS works as intended, many Hemi enthusiasts find the transition between four-cylinder and eight-cylinder operation noticeable and prefer the consistent feel of a full V8 at all times. The Diablosport tuner for 5.7 Hemi applications includes an MDS disable option that keeps all eight cylinders active during normal driving.
2015 and newer Ram 1500 V8 and performance car applications like the Challenger require an aftermarket PCM to accept tuning due to factory PCM security measures. The inTune i3 Platinum with a PCM cross-shipment or the Trinity 2 EX Platinum package covers these applications. Do not attempt to tune a 2015 or newer Ram or Challenger without the appropriate modified PCM as it may cause damage to the factory unit. Confirm requirements for the specific year and model before purchasing.