



Advanced Technology at Your Fingertips
Built on the trusted and renowned MPVI2 platform, the RTD seamlessly plugs into your vehicle's OBDII port. This compact yet powerful module allows you to load a tune effortlessly using HP Tuners' TDN network.
Easy and Convenient Tuning
Forget about needing a laptop—tuning your vehicle has never been easier. With the RTD4, you can use your iOS or Android smartphone to make adjustments on the go, ensuring your Ford is always performing at its best.
Compatible with many 2023, 2024, 2025, and 2026 Ford Models. No PCM unlock or swap required.
Looking for a tuner with MPT Custom Tunes? CLICK HERE
Physical products may be returned within 30 days for any reason, provided that the product has not been installed and is in brand new, unused condition with the original packaging. Once a product has been installed, it is non-refundable.
Digital Products, such as MPT Tunes and HP Tuners Credits, are not covered by this.
Please see our Refund Policy or contact an MPT Expert for more information.
MPT is proud to offer free shipping on most orders over $149.
Free Shipping applies only to the contiguous United States. Shipping and handling charges will apply to all orders outside the contiguous US, with the buyer being responsible for any duty fees or taxes their home country may charge to import goods.
With Free Shipping, we will choose the best shipping method for the order. We use all major carriers, including USPS, FedEx, UPS, and DHL.
Items not stocked at our location may incur additional lead-time or charges.
Please our Shipping Policy for more information.


Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1986) is a California law that applies to all companies selling products in California. Proposition 65 requires warnings if a product contains any listed chemical present above very low levels that are known to cause cancer, birth defects or other reproductive harm. Proposition 65’s warning standards are among the most stringent in the world. Proposition 65 is not a product safety law, but rather a “right-to-know” law. Businesses are required to provide warnings to comply with Proposition 65. These warnings are required to be in place for all products offered for sale in California.
There are over 800 chemicals on the Proposition 65 list, which is administered by California's Office of Environmental Health Hazard Assessment (OEHHA), a part of the California Environmental Protection Agency. The list includes naturally occurring and man-made chemicals. Proposition 65 warnings can be seen for a wide variety of everyday consumer products, including Automotive Performance products, and warnings can be seen posted throughout California in a variety of establishments such as hotels, restaurants, automobile dealerships/repair shops, and retail stores just to name a few.
To comply with the requirements of Proposition 65, this warning is present on all products sold by MPT.
More detailed information can be found by going to:
https://www.p65warnings.ca.gov/
The HP Tuners RTD4 is a Gen 4 remote tuning device designed for Ford owners who want a simple, cable-free way to load custom tunes. The RTD4, also commonly referred to as the HP Tuners RTD Gen 4, RTD 4, RTD+4, the HPTuners RTD4, or the RTD4 Analog Input device, plugs into the OBD2 port and connects to the TDN app on your iPhone or Android. No laptop needed, no bulky hardware, and no PCM swap required for supported Ford models. It’s a clean, streamlined way to handle tuning directly from your smartphone.
Built off the same core platform as the MPVI2, this RTD device keeps everything simple for remote tuning while still offering the data logging and diagnostic tools Ford owners expect.
Load custom tunes through the TDN app
Send your stock file directly to your tuner
Read and clear Diagnostic Trouble Codes (DTCs)
Support data logging
Handle gear ratio and tire size corrections (requires a laptop)
Operate as a compact, plug-and-play OBD2 tuning interface
Tune any HP Tuners–supported vehicle with added credits
***VCM Editor is not supported.
Works with many 2023, 2024, 2025, and 2026 Ford models
No PCM removal or unlock required for supported vehicles
Uses the OBD2 port for flashing
Fully compatible with HP Tuners VCM Scanner and Pro Feature Set
Works with the iOS and Android TDN App
Allows tune downloads and uploads directly from a smartphone
Compact, reliable hardware built on MPVI-based technology
Includes RTD4 Analog Input support
Can be used on any HP Tuners–supported platform with credits
Is the RTD4 the same as the RTD+4 or RTD Gen 4?
Yes. These are all common names for the same HP Tuners remote tuning interface.
Does this RTD device require a PCM swap?
No. Supported Ford applications do not require PCM unlocking or removal.
Can the RTD4 tune my vehicle without a laptop?
Yes. Loading tunes, sending stock files, and communicating with your tuner all work through the TDN app.
Is the RTD4 the same thing as the MPVI2?
It shares the same foundational technology but is built specifically for remote tuning through the TDN network.
Can the RTD4 work on multiple vehicles?
Yes. You simply purchase credits for each vehicle you tune.
Please Note: No tunes, preloaded or custom, or HP Tuners credits come with the purchase of this HPTuners RTD4 analog input device. To use this RTD 4, you will have to purchase MPT Tunes and/or HP Tuners credits.
MPT is proud to offer free shipping on most orders over $149.
Turnaround Times:
Special Considerations:
A Return Authorization Number is required for all returns. Please contact an MPT Expert to obtain an RA # before sending anything back to us for any reason.
MPT tuning charges and license fees are Non-Refundable. The sale is final when MPT has sent the tune file over email. This includes both new tune purchases and tune updates.
Products other than MPT tunes, digital products, and MPT decals may be returned within 30 days for any reason, provided that the product has not been installed and is in brand new, unused condition with the original packaging. Once a product has been installed it is non-refundable. We reserve the right to deny the return, should the product be received and it display signs of installation or unmentioned damage.
For vehicle programmers/tuners, the vehicle must be returned to stock if a program was installed. If a tuning device is returned and has not been returned to stock, a refund will not be issued, and your tuner will not be sent back without a shipping and handling fee.
The customer is responsible for all shipping charges incurred during the return process.
Amount Refunded:
•Returns post marked before 30 days from the date the item was received will be refunded the purchase price, minus a 25% restocking fee and the cost of shipping.
•After 30 days, all sales are Final.
•Shipping charges along with any package insurance are non-refundable. If your purchase was shipped with our Free Shipping option, the cost of the shipping will be subtracted from the total refund amount.
HP Tuners Credits are assigned to the HP Tuners product with the submitted serial number and cannot be transferred. Once you load a tune to your vehicle with the RTD, these credits are Non-Refundable.
Digital products and files that have no ability to be taken back physically, such as an SCT Tuner Unlock, are Non-Refundable.
nGauge Tune License Fee is included in your initial purchase of MPT tunes for the nGauge. This fee is factored into the price of the tunes and becomes Non-Refundable when the stock file has been emailed to MPT.
MPT Decals are Non-Refundable, once they have been received by the customer.
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I read a lot of reviews on different forums and there wasnt really anything on my year truck (2012 F150) I read a lot of reviews talking about caltracs making noise over bumps and making the vehicle ride really harsh and louder because of the solid bushings vs the rubber coated OEM ones. So I was hesitant on purchasing these traction bars but purchased them anyway.
I had really bad axel wrap / hopping when burning out, it wasn't smooth. I purchase these and installed them and I couldn't be happier. The install wasnt bad. Used a ball joint press and a puller to remove the old bushings and used the ball joint press to install the new bushings in the leaf springs. I had to purchase longer ubolts because of the thicker lower plate (truck has 3" blocks on the rear) and the links supplied was short. I called caltracs directly and explained the issue with the links (original 29") and I needed 31.5" for the install. (Probably due to the 3" rear blocks) And they sent me the correct length within a few days.
This took care of the wheel hop and exel wrap completely. The truck drives normal, not harsh or stiff. It isn't louder because of the solid bushings and it doesn't make any noise over bumps or rough roads.
Excellent purchase and excellent customer support.
2018 Expedition Max EcoBoost. Everyone online said that an MPT tune is a must have on the EcoBoost. Everyone was right. I got the 91 Daily/Tow tune just 1 day before driving across the country from Florida to Denver towing my 30ft. camper trailer (not for fun… we moved). This tune turned the expedition into an absolute beast. The tow haul function, power, and gearing made it so easy and effortless pulling the camper. 2000 miles in 4 days. 12.4 miles per gallon. It’s a whole new and exciting driving experience. Thanks MPT.
AS the PRX 91 and the PRX 93 tune completely woke up at 2.7 eco-boost. It is a little monster absolutely love it.
BIG shout out to MPT for unreal customer service! These guys are the best by far. I got the performance and tow tune on my 2.7 and what a monster it turned into over night! Strongly recommend MPT!
Super easy to use and it worked very well!