Last updated: 2026-08-26 · Version 1.4
These Terms of Service ("Terms") govern your use of the website, web application, and related services (collectively, the "Service") offered by Tuneless.tech ("we", "us", "our"). By creating an account, signing in, or otherwise using the Service, you agree to be bound by these Terms, our End User License Agreement, and our Privacy Policy.
If you do not agree, do not use the Service.
Tuneless.tech is a software product operated by Tuneless LLC, a Wyoming limited liability company. It is an independent third-party product, not affiliated with, sponsored by, or endorsed by Holley Performance Products. Holley®, Sniper™, Terminator™, and other product names are trademarks of their respective owners.
The Service connects, via your web browser and a USB-to-CAN adapter, to a compatible Holley engine control unit ("ECU"). It reads sensor data, reads and writes ECU configuration values (tables, scalars, axes), and uses artificial intelligence to suggest configuration changes.
The Service does not:
This is the most important section in this document. Read it carefully.
EFI tuning is inherently dangerous. An incorrect tune can cause detonation, lean run, rich run, overheating, melted pistons, valve damage, broken rings, catastrophic engine failure, fire, injury, or death. You assume all risk associated with using the Service. By using the Service you acknowledge that you are solely responsible for any and all modifications made to your vehicle's engine control unit and that you use the Service entirely at your own risk.
Specifically, you agree:
Safety mechanisms. Every write the Service makes to your ECU is recorded in a session transaction log (the prior value, the new value, and the time of the change), which you can review and use to roll back a change. The Service also includes an automatic-revert safeguard that will attempt to undo a write if it detects an abnormal air-fuel-ratio deviation shortly after that write is applied. These mechanisms are provided as an additional layer of protection. They are not a substitute for your own review before approving a change, they may fail or may not catch every dangerous condition, and they do not reduce or eliminate the risks described in this Section 5.
The United States Environmental Protection Agency (EPA) and the California Air Resources Board (CARB) regulate aftermarket modifications to vehicle emissions systems. Under Section 203(a)(3)(B) of the Clean Air Act, it is unlawful to manufacture, sell, or install any part or component intended for use with a motor vehicle where a principal effect is to bypass, defeat, or render inoperative any emissions control device or element of design.
Tuneless.tech is not designed, marketed, or intended to modify, bypass, or defeat any emissions control system. The Service provides tools for adjusting engine calibration parameters (such as volumetric efficiency tables, spark timing, idle speed, and acceleration enrichment) for the purpose of improving driveability and performance within the bounds of applicable law.
If you use the Service on a vehicle that is subject to emissions inspection or registration requirements, you are solely responsible for ensuring that any modifications you make do not cause the vehicle to fail emissions testing or violate any applicable emissions law. We expressly disclaim any responsibility for emissions compliance of your vehicle.
We sell two paid products:
Cancellation of the Professional Installer subscription takes effect at the end of the current billing period. Refunds, if any, are governed by our Refund Policy.
A tune session is one end-to-end pass through the guided road-tune wizard that results in one or more changes being written to your ECU. Viewing telemetry, reading tables, exporting snapshots, or running the INSPECT diagnostic view do not consume tune sessions. A session is counted at the moment writes are first applied; you can roll back without losing the session count.
We may, at our discretion:
The Service's tuning suggestions are generated content. They can be wrong. Treat every proposed change as a hypothesis to verify, not a directive to execute blindly.
You agree not to:
The Service, including its software, design, branding, and content, is owned by Tuneless.tech or its licensors. You retain ownership of any tunes, data, or other content you create using the Service. You grant us a non-exclusive, royalty-free license to process that content as necessary to provide the Service.
THE SERVICE IS PROVIDED "AS IS" AND "AS AVAILABLE", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT, OR THAT THE SERVICE WILL BE UNINTERRUPTED, ERROR-FREE, OR FREE OF VIRUSES OR OTHER HARMFUL COMPONENTS.
WE DO NOT WARRANT THAT ANY TUNE, SUGGESTION, OR CONFIGURATION CHANGE PRODUCED BY THE SERVICE WILL BE SAFE FOR YOUR ENGINE OR APPROPRIATE FOR YOUR USE.
TO THE MAXIMUM EXTENT PERMITTED BY LAW, IN NO EVENT WILL TUNELESS.TECH, ITS AFFILIATES, OFFICERS, EMPLOYEES, OR CONTRACTORS BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, INCLUDING WITHOUT LIMITATION DAMAGE TO ENGINES, VEHICLES, OR PROPERTY; LOST PROFITS; LOST DATA; OR ANY DAMAGES ARISING OUT OF OR IN CONNECTION WITH YOUR USE OF THE SERVICE.
IN NO EVENT WILL OUR AGGREGATE LIABILITY EXCEED THE GREATER OF (A) THE AMOUNT YOU PAID US IN THE 12 MONTHS PRECEDING THE EVENT GIVING RISE TO THE CLAIM, OR (B) $100 USD.
Some jurisdictions do not allow the exclusion of certain warranties or the limitation or exclusion of liability for certain types of damages, including personal injury. In those jurisdictions, some of the limitations above may not apply to you, and our liability will be limited to the maximum extent permitted by applicable law. Nothing in this Section 11 is intended to limit liability that cannot be limited under applicable law, including for gross negligence, willful misconduct, fraud, or death or personal injury caused by our negligence, where such limitation is not permitted by law.
You agree to indemnify and hold harmless Tuneless.tech and its affiliates from any claim, demand, loss, liability, damage, or expense (including reasonable attorneys' fees) arising out of (a) your use of the Service, (b) your violation of these Terms, (c) your violation of any law or third-party right, or (d) any tune, modification, or change you applied to a vehicle using the Service.
You may stop using the Service and delete your account at any time. We may suspend or terminate your access for violation of these Terms or for prolonged inactivity. On termination, your right to use the Service ends; provisions of these Terms that by their nature should survive (intellectual property, disclaimers, limitations of liability, indemnification, governing law) will survive.
We may update these Terms from time to time. When we do, we will update the "Last updated" date at the top and, for material changes, notify you by email or through the Service. Continued use after the update constitutes acceptance.
These Terms are governed by the laws of the State of Wyoming, without regard to its conflict-of-laws principles.
PLEASE READ THIS SECTION CAREFULLY. IT AFFECTS YOUR LEGAL RIGHTS, INCLUDING YOUR RIGHT TO FILE A LAWSUIT IN COURT.
16.1 Agreement to arbitrate. Except as set out in §16.4 below, you and Tuneless LLC agree that any dispute, claim, or controversy arising out of or relating to these Terms, the End User License Agreement, or your use of the Service (a "Dispute") will be resolved exclusively through final and binding arbitration rather than in court, except that you may assert claims in small claims court if your claims qualify.
16.2 Arbitration provider and rules. The arbitration will be administered by JAMS under its Streamlined Arbitration Rules and Procedures (for claims under $250,000) or its Comprehensive Arbitration Rules and Procedures (for claims at or above that amount). The arbitration will be conducted by a single arbitrator and will take place in Wyoming, or remotely by videoconference at the arbitrator's discretion or by mutual agreement of the parties.
16.3 Class action waiver. YOU AND TUNELESS LLC AGREE THAT EACH MAY BRING CLAIMS AGAINST THE OTHER ONLY IN YOUR OR ITS INDIVIDUAL CAPACITY, AND NOT AS A PLAINTIFF OR CLASS MEMBER IN ANY PURPORTED CLASS OR REPRESENTATIVE PROCEEDING. Unless both you and Tuneless LLC agree otherwise, the arbitrator may not consolidate more than one person's claims and may not otherwise preside over any form of a representative or class proceeding.
16.4 Exceptions. Notwithstanding §16.1, either party may (a) bring an individual action in small claims court, and (b) seek injunctive or other equitable relief in a court of competent jurisdiction to prevent the actual or threatened infringement, misappropriation, or violation of a party's intellectual property or confidentiality rights, pending completion of arbitration.
16.5 Right to opt out. You may opt out of this arbitration agreement by sending written notice to legal@tuneless.tech within 30 days of the date you first agreed to these Terms. Your notice must include your name, the email address associated with your account, and a clear statement that you wish to opt out of arbitration. If you opt out, both you and Tuneless LLC retain the right to litigate any Dispute in the state or federal courts located in Wyoming, and the class action waiver in §16.3 continues to apply to the fullest extent permitted by law.
16.6 Severability. If any part of this Section 16 is found unenforceable, the remainder will remain in effect, except that if the class action waiver in §16.3 is found unenforceable as to a particular Dispute, that Dispute must be resolved in the state or federal courts located in Wyoming rather than in arbitration.
16.7 California PAGA claims. Nothing in this Section 16 requires you to arbitrate, or waives your right to bring, a representative action under the California Private Attorneys General Act (PAGA) on behalf of the State of California, to the extent such a waiver is unenforceable under applicable law.
16.8 EU/UK/Quebec consumers. If you are a consumer habitually resident in the European Union, the United Kingdom, or the Province of Quebec, this Section 16 does not apply to you to the extent it would be unenforceable under the mandatory consumer-protection laws of your jurisdiction. In that case, any Dispute will instead be resolved as provided in Section 15 (Governing law), and nothing in this Agreement limits any right you may have to bring a claim before your local courts or a competent consumer-protection authority under mandatory law that cannot be waived by contract.
[Open question for lawyer: confirm JAMS vs. AAA preference; confirm the 30-day opt-out window and notice mechanism are adequate; confirm enforceability of the class-action-waiver severability carve-out under Wyoming law and in any states with strong consumer-protection statutes where we have users; confirm the §16.7/§16.8 carve-out language precisely matches counsel's preferred approach for PAGA and EU/UK/Quebec consumers.]
Questions about these Terms? Email legal@tuneless.tech.