We ship to all 50 States. However, extra shipping charges apply for all Hawaii and Alaska deliveries. Email us with the products you’d like and we’ll give you a quote if shipping to those two States.

• Tuners: Orders will be shipped by air. Processing your order takes 1-2 business days. Shipping will take 2-4 business days. This means your order should arrive at your door within 4-6 business days.
• Exhausts & Other Items: Orders are shipped via Fedex Truck Freight or Fedex courier. Processing takes 1-2 business days. Generally exhaust arrives within 3-10 days – however some parts may take up to 2-6 weeks.  Please take that lead time into consideration when placing your order and contact us if you have any questions. Tracking will be emailed to you after your order has shipped, however it may not update on the Fedex website until it has started moving within their system.

Tracking will be emailed after your order has been shipped.

* COVID-19 may affect this timeline

We accept returns of products in New & unopened items. This means if you ordered the wrong part & it is still in original packaging, we will accept this return. However, the buyer is responsible for all shipping fees

1. If your order qualified for free shipping, you will be refunded your purchase price minus original outbound shipping costs.
2. If you paid for shipping, that is not refunded.
3. You are responsible for return shipping costs to us.

If you need to contact us please email: hello@dieseldiy.com
We DO NOT accept any returns on items that have been installed. We DO NOT accept any returns on tuners. Please make sure the tuner is compatible with your truck before ordering.

If you purchased a GDP tuning system, they have online tech support . If you purchased a RaceMe, BDX or Mini Maxx contact us for tech support.