Overland Torque Tune (OTT) by Overland Tailor

I honestly think you'd be fine with either. I'm not aware of any issues with either of the devices so I can't steer you to one vs the other based on that.

I just want to assure you, either of these devices will be perfectly fine for use with our calibration and as long as they're installed/setup properly, you're unlikely to have any issues at all. I'm pretty sure a good number of our clients use these devices. They're welcome to chime in here and share their thoughts/experiences if they wish.

Best,
Justin

 

I am using the Hypertech speedometer calibrator on my 2nd Gen Tacoma with the OTT. No issues.

 

I also have HT speedo calibrator and even flashed myself back and forth and no issues.

 

The RC and HT speedo calibrators are exactly the same. You can even use the software from HT with the RC and vice-versa. The RC one has always been cheaper when I looked. They do real-time CAN adjustments and do not modify the ECM or any other module.

 

Introducing the 2024+ Tacoma ECU/TCU Tuning Solutions from Overland Tailor Tuning (OTT)

Overland Tailor Tuning (OTT) is proud to announce the official release of our highly anticipated ECU and TCU tuning solutions for the 2024+ Toyota Tacoma featuring the 2.4L (T24A-FTS) engine in both gas and hybrid variants. After more than 6 months of extensive development and in-house testing, OTT is excited to offer a precision-engineered, comprehensive tuning solution designed to optimize performance, enhance drivability, and improve reliability.

For those who are familiar with OTT from our work with the 3rd Gen Tacoma, you’ll find the same high level of commitment and precision in the new models. OTT’s tuning is designed with a focus on real-world reliability and performance, not just raw power—though the new platforms certainly deliver a punch! In some cases, they provide more than three times the gains compared to what was possible with the previous naturally aspirated platforms!

Key Features of OTT’s New Tuning Solutions:

• Reworked Throttle Control Strategies: The new generation ECUs feature a completely new throttle control strategy compared to previous Tacoma generations. With this new strategy, we offer throttle sensitivity options of “Stock,” “Base,” and “Enhanced,” allowing drivers to tailor their vehicle’s throttle response to their preference, replacing the previous “Lite,” “Mild,” “Medium,” “Spicy,” and “Super Spicy” naming conventions.
• Enhanced Throttle Response and Reduced Spool Time for Turbocharger: OTT’s tuning sharpens throttle response and reduces turbocharger spool time, allowing for more immediate low-end and midrange torque. This means the engine reaches usable boost pressure more quickly, improving drivability and acceleration, particularly during off-the-line starts and when accelerating from low RPMs. This results in a more responsive driving experience, with faster throttle reactions all with smooth delivery.
• Rev Hang Reduction: For manual transmission owners, OTT’s tune reduces rev hang, allowing for quicker and more precise shifts. *NOW AVAILABLE!*
• Stage 0 Customization: OTT offers Stage 1 and Stage 0 tuning solutions, with TCU updates for each drive mode to enhance driving performance. Stage 0 is available on request for those requiring reduced output at lower boost levels.
• SR Trim Calibration Option: OTT will offer the ability for SR trucks to receive “OEM Spec” calibration updates, bringing the base trim to the full output of the higher trim trucks. SR Trim vehicles are also supported in Stage 1 and Stage 0 configurations.
• Fuel Requirements: OEM Spec through Stage 1 calibrations are designed for Regular to Premium fuel, with peak performance achieved on Premium (Recommended).
• Exclusive Calibration Capabilities: One such ability is OTT's offering of a proprietary MAF calibration that ensures perfect integration with a retrofitted TRD Pro/Trail Hunter airbox, without triggering CEL codes. In addition, OTT is developing solutions such as Auto Start-Stop disable and other advanced vehicle customization options (to be announced at a later date).

Why OTT’s Tuning is Different from Piggyback Controllers:

Unlike piggyback controllers, which manipulate the signals between sensors and the ECU, OTT’s tuning works natively within the factory ECU. This allows for precise and real-time adjustments to parameters like throttle response, fuel delivery, ignition timing, and boost control, ensuring that the ECU receives accurate information for optimal decision-making.

Piggyback Controllers vs. OTT’s Native ECU Tuning:

• Spoofing Sensor Signals: Piggyback controllers modify sensor inputs (e.g., MAF, boost pressure, and throttle position) before sending them to the ECU. This disrupts the ECU’s ability to make accurate, real-time adjustments.
• Manipulated Outputs: These devices alter ECU outputs like fuel delivery, timing, and boost but lack dynamic, real-time adaptation, leading to inefficient engine management under varying driving conditions.
• Risk to Vehicle Safety Features: Toyota’s ECUs have built-in safety mechanisms such as knock detection and overboost protection, and temperature-specific mapping which piggyback controllers can bypass, putting the engine at risk when factory signals are spoofed.

Why OTT’s Native ECU Tuning is Superior:

• Native Calibration: OTT calibrations are directly integrated into the OEM ECU code, ensuring seamless performance optimization without the need for premium fuel exclusively. Unlike some piggyback controllers that restrict fuel choice. When the ECU remains in charge of decision-making, OTT can offer flexibility, allowing the vehicle to run on Regular or Premium fuel.
• Reliability and Safety: By working natively within the factory ECU, OTT ensures your vehicle’s safety features, such as knock detection and overboost protection, and temperature-specific mapping remain fully operational.
• OEM-Level Integration: OTT’s tuning is fully compatible with your vehicle’s factory systems, avoiding triggering error codes or safety warnings during service.

The Importance of Retaining Full Access to Diagnostics and ECU Programming:

OTT’s tuning does not lock down the ECU or restrict access to factory programming modes. Unlike some newer tuning solutions, which may lock diagnostics modes and restrict dealership access to the ECU, OTT ensures that dealerships can perform diagnostics and service without interference, preserving warranty coverage and avoiding issues during routine maintenance.

Why Choose OTT Over Other Tuning Solutions?

• Native ECU Tuning for Reliability: OTT works directly within the OEM ECU, ensuring compatibility with Toyota’s factory safety features while maintaining system integrity.
• No Service Concerns: OTT’s tuning does not lock down ECU access, meaning your vehicle can be serviced at the dealership without restricting access to diagnostic tools or having to remove piggyback devices.
• Proven Performance: OTT’s tuning has been rigorously tested, providing proven horsepower and torque gains while ensuring your vehicle’s reliability and safety.

Pricing Information:

The 4th Gen Tacoma and 5th Gen 4Runner Calibration from OTT will initially be available only through an authorized OTT retailer. DIY options are coming soon, however. To ensure consistent support across the OTT network, we've developed custom hardware for our retailers, enabling direct ECU Read/Write processes for quick, efficient, and safe tuning.

• MSRP through authorized retailers: $650 USD
• DIY Kit Pricing: $950 USD (Includes VFTuner WiFlash Device & Software, Licensing Credits, Calibration suite, and shipping/handling)
  Note: DIY option currently requires a Windows-based PC. The software suite includes vehicle-specific protocols for reading/writing from the new generation ECU, as well as a comprehensive high-speed data logger.
  VFTuner "Legacy" users must upgrade to WiFlash for compatibility with the new ECU. An upgrade path will be available for prior WiFlash clients.

Revisions and Updates:

Revisions apply to your current calibration—whether it’s OEM Spec, Stage 0, or Stage 1. These updates are available at no additional cost (Retailers may charge a small service fee for time/labor related to revisions), ensuring that your tune stays optimized with the latest calibration advancements as software improvements become available.

OTT is also planning additional Staged packages to align with both current and upcoming bolt-on upgrades, keeping your vehicle’s performance evolving.

Additional Things to Know & Be Aware Of:

• Multiple Calibrations for Each Trim: With the new generation ECUs, there are multiple calibrations available for each vehicle trim, unlike previous generations where a single calibration covered up to 2-3 model years. Due to this, not every vehicle will be immediately available at launch. OTT has worked hard to build the most extensive library of available calibrations to support as many vehicles as possible from the start so the impact should be relatively minimal.
• Calibration Availability: We have a broad library of files ready, but new calibrations may occasionally surface. If your truck has a calibration that isn't yet available, it cannot be supported until we obtain a physical read of that ECU. If you help facilitate this by coming in for a read, OTT will offer a $50 incentive. OTT and VFTuner greatly appreciate your assistance!
• New 2025 Models: With the release of the 2025 models, OTT is in the process of building a calibration library for these new ECU ID’s. It should be expected that 2025 model year vehicles will require us to read the files, and these files might not be immediately available until we’ve built the library.
• CARB-EO Compliance: OTT is working to obtain CARB-EO for Stage 1 calibrations, ensuring full compliance for customers in California and other similar-regulated states. This effort will ensure that OTT’s tuning solutions remain fully street-legal in these areas, allowing performance enhancements without violating emissions regulations.
• Revisions and Updates: Revisions apply to your current calibration—whether it’s OEM Spec, Stage 0, or Stage 1. These updates are available at no additional cost (Retailers may charge a small service fee for time/labor related to revisions), ensuring that your tune stays optimized with the latest calibration advancements as software improvements become available.
• OTT is also planning additional Staged packages to align with both current and upcoming bolt-on upgrades, keeping your vehicle’s performance evolving.

Stage 1 Dyno Results:

i-Force (SR5-TRD Trims)

RED: OEM Calibration, Stock Vehicle, 91 Octane
BLUE: OTT Calibration, Stock Vehicle, 91 Octane

-----------------------------------------------------------------------------------------------------------------------------------------

i-Force MAX (Hybrid TRD Trims, Inc. Pro/Trail Hunter)

RED: OEM Calibration, Stock Vehicle, 91 Octane
BLUE: OTT Calibration, Stock Vehicle, 91 Octane

 

Very nice. How much if I already have the wiflash device and software?

 

We're sorting out the details with VFTuner on a few things such as the licensing change over, CAN-Connect cable pricing/availibility and a few other details.

Will certainly provide an update once that information is available.

 

We've seen much higher-than-expected interest in DIY tuning options, so we want to keep the community informed on what’s required to tune the new 4th Gen Tacoma with our calibration files. Here’s what you need to know.

Required Hardware & Costs

To flash the new ECU in the 2024+ Tacoma, you will need:

• VFTuner WiFlash Device
• VFTuner License (4G Lite)
• (4) License Credits
• VFTuner CAN-Connect Cable

This complete package is available directly from OTT for $950 USD w/ OTT Stage 1 Calibration Pack.

For Existing VFTuner Users

• VFTuner Legacy (Tactrix) devices are not compatible with the new platform. If you have a Legacy device, you will need to purchase the VFTuner WiFlash Lite Kit with Gen4 Flash Protocols:
  • VFTuner WiFlash Lite Kit
• If you already own a WiFlash device, contact VFTuner at Support@ovtune.zendesk.comto inquire about converting your existing license to the Gen 4 Lite Kit protocols.
  • We do not have details on whether this is a free or paid upgrade, so please check with VFTuner directly.
• You will still need to purchase additional Licensing Credits for the new platform:
  • VFTuner License & Credits

VFTuner CAN-Connect Cable

• The Gen4 ECU cannot currently be flashed through the OEM OBD2 port.
• The VFTuner CAN-Connect Cable allows for easy plug-and-play integration, providing a secondary OBD2 port with no permanent modifications.
• Installation is simple—remove the kick panel and insert the connector in line with an existing harness.
• VFTuner CAN-Connect Cable

Calibration & Tune Packs

• The full suite of calibration files will be available in two ways:
  • Included with the full package purchase (all required hardware/software)
  • Standalone Tune Pack for those who already own the necessary equipment – $450 USD
• The Tune Pack includes all available calibrations and future updates for a single Calibration ID.

For more information or to purchase, please email info@overlandtailor.com.

If you have any questions, feel free to reach out. We’re excited to see such strong interest in DIY tuning and look forward to supporting the community!



**We are currently out of stock on CAN-Connect cables** -03/07/25

 

@JustDSM - So the tuned 4G ecu Toyota dealership won’t be able to know if it is tuned because the ecu ID shows the same as stock?


Can you explain the reducing time of turbo spool up?

 

Towards the top of the quoted port.

• Enhanced Throttle Response and Reduced Spool Time for Turbocharger: OTT’s tuning sharpens throttle response and reduces turbocharger spool time, allowing for more immediate low-end and midrange torque. This means the engine reaches usable boost pressure more quickly, improving drivability and acceleration, particularly during off-the-line starts and when accelerating from low RPMs. This results in a more responsive driving experience, with faster throttle reactions all with smoothdelivery.

 

The way method in which we're flashing these, we're not setting any flash counter, flash history, or any indicator at all that the ECU has received a flash. There's no trace of the tune as far as it being flagged or recorded as being "tuned."

Without going into calibration specifics, there are areas within the OEM calibration that limit/hold the turbo back from achieving it's natural quick spool nature. In addition to what @ERod27 shared, the part throttle reduction in spool times quite significantly improves low-end/midrange torque, especially when cruising at speed.

 

@JustDSM i just sent you a DM about license error message about flashing. It’s the second time this happened. You took care of it for me before…thx!

 

Posting my reply here as it will likely be relevant to others:

What version of VFTuner are you using?

If it’s below 3.4.0 you’ll need to update. VFT recently pushed an update that wiped all prior versions.

 

I have 3.0.9 exe

I’m deleting it and redownload again.

 

I’ve deleted the previous and downloaded 3.4.0.56
And immediately prompted to update. I now have 3.4.0.75 and that took care of it. Thx again!

 

My experience with OTT tune..
Truck: 2016 SR5 4x4 with 145,000ish miles on it.

First, let me highly recommend Jamey Davis/Central Georgia Tuning. Super duper nice guy. I really can't say enough about working with him. Top notch professionalism and just an all around good dude. Holler at him if you want to get your truck tuned. His number: (706) 573-1635

I first got the Mild/Medium tune and drove it for about a month. I had a good mix of interstate, country, and city driving. The throttle response was a bit too much, just a little too chippy in stop and go traffic. It was like it wanted to jump offsides at red lights. My fuel mileage also took a hit. Previously I was getting between 17.7-18.7 MPG (and up to 19.1 on long interstate drives). With the Mild/Medium setting I was getting in the low 16-point-somethings. I went back to Jamey and got it re-tuned to Lite/Mild. This was the sweet spot. Throttle response was good and the miles per gallon returned to what I was getting before the tune. The OTT tune makes my truck drive like a V6. Drives good in stop and go traffic, accelerates well in traffic and when getting on the interstate. Highly recommend.

 

I have to get my Taco smogged this year for the first time. If I have an OVtune from way back in the day and want this new Carb approved tune, do I need to get my truck back to its stock file first (cause not sure if I can) to make sure any type of issue doesn’t arise first?

 

You can flash the OTT directly over the old OVtune. There is no need to flash back to stock.

 

The OV tune wil not pass in Colorado. Had the same issue. I got it tuned with the OTT tune. Make sure you have your paperwork and put the CARB sticker under the hood. Also - I love the new tune. Significant better than the old OV tune from years ago.

 

@JustDSM How can I get tuned in the Bay Area? I reached out to Area51 Tuning a couple times and never got a response