This is how we do business.

Please refer to this page for information on our return policy, product guarantee, privacy notice, pricing and payment, and shipping information.

Shipping & Order Information

We will ship your items as soon as possible. Orders received by 2:00pm PST will ship the same day. Rest assured, we will let you know if any part of your order may have a delay that is longer than normal. Your package will be shipped by UPS or USPS Priority Mail and a tracking number will be emailed to you as soon as it ships. Shipping times will vary depending on your location. Overnight shipping is available. Call for details.

NOTE: Due to California regulations we are unable to ship to a California address.

All prices listed are in US dollars and are subject to change without notice.

SSL (Secure Socket Layers) technology is used to keep your transactions safe during transmission and is not stored online.


When you receive your purchase, please examine it carefully. If for any reason you are not satisfied with an item, you can return it to the address below within thirty (30) days of receipt. When we receive it, we will exchange or refund the item (less appropriate adjustments for shipping). Please email us with your name, order number, and the reason for your return so we can quickly identify your return and send you further instructions.

Package the product you’re returning in its original box (if possible) and include a copy of your order confirmation email. Please note whether you would like a return or an exchange. If you would like to exchange an item, please let us know the item number of the product you are interested in. Send returns to:

Dave Mackie Engineering
2065-H Sperry Avenue
Ventura, California 93003

Please note, this is not a retail location; we are not open to the public.

Customer Service: (805) 658-6969

Privacy Notice

We do not sell, share, or disclose your personal information, unless required by law. All information is kept private. We use the latest encryption technology to keep your information safe.

If you have any questions or comments about our policies, please don’t hesitate to contact us.

Questions? Comments?

If you have question or comments about our policies, we’ll do our best to answer them. Visit our contact page and let us know what’s on your mind.