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It is advisable that you have a good baseline of current fuel economy, both in-town and highway driving, prior to purchasing an AquaTune Hydrogen Fuel Systems unit and make certain that the fuel and injection delivery systems are working correctly. The O2 sensor needs to be replaced every 60,000 miles or 6 years, per manufacturer’s recommendations. (Do Not use an after-market product, only a manufacturer’s replacement!) This is to ensure the optimum performance. AquaTune will not guarantee to fix your vehicle, just make it run cleaner and more efficiently. Spark plugs should be either iridium or copper core. No Platinum plugs.

AquaTune Hydrogen Fuel Systems, Inc. will not be held liable for any damages, loss or injury sustained, however arising, present or future, known or unknown at this time, due and relating to: Improper installation and/or misuse of the AquaTune Hydrogen Fuel System, other than the intended purpose; any flammable mixture, mineral spirits, or other liquids other than the allowable 50/50 mixture of methanol, and distilled water throughout or in the water reservoir; improper routing of hoses, unit or water tank; water mineral damage from any but the recommended type of water (distilled only, not distilled drinking and not the kind intended for use in batteries such as from an automotive store); any engine damage to computer sensors caused by any of the above. The system MUST be installed as it was designed to be used per the instructions. Any of the stated conditions will cause an immediate revocation of any stated or implied warranties. If you install the unit according to directions and there are no other issues with your vehicle such as check engine lights being on, then we guarantee and, you can expect, to gain a minimum of at least a 25% increase in the fuel economy and up to 30% increase in driveability horsepower ( Xtreme Series only). Most customers report even greater increases in the fuel economy.

By signing upon receipt of the shipment you are agreeing to all terms and conditions as stated. Refunds May Not apply to sales outside the U.S.A. and Canada, to commercial applications and/or fleet accounts.

NOTE: DO NOT go through the Power Assist Vacuum Source feeding to the Brake Power Booster as your point of induction entry due to possible icing up of the line.

If any repairs need to be performed to a unit the cost is $100.00 plus shipping!

NOTE: It is important to replace the tubing from the processor (A) to the point of induction any time a tune-up is performed or engine work.

30-Day Money back policy

We have a 30-day money back return policy IF your unit does not give you the results when installed ONLY as under the guidelines set out! Any refunds given by AquaTune will have a re-stock fee deducted as each unit has electrical components. The amount of the re-stock fee will be 15% or more, depending on the completeness and condition of the kit returned and do not include shipping charges or installation fees and are processed ONLY after the kit has been returned with insurance! Refunds on Special Offerings will be pro-rated over the number of units purchased. Special Orders, such as multiple generators, will have the standard re-stock fee charged.. Customers will incur the expense for returning the item.


Aquatune warrants that the Products shall be free from all defects and shall meet all written specifications and drawings. Personal units come with a 2 year warranty, and the commercial units come with a 3 year warranty. Should there be any defects in the Products manufactured by Aquatune and such defects are caused by us during the manufacturing process or the period in which we have control of the products. Aquatune will be responsible for curing such defects for the period of time stated above. Aquatune reserves the right to repair any defective Products and not replace said defective Products. Any tampering with Products will void any warranty provided by Aquatune. Not covered by this Warranty is the support accessaries used by the Aquatune unit itself, water container, hoses , water filter, water pump , etc.