Dyno Tuning Policies

What you need to know before an appointment.

The following tuning policies should be read thoroughly. We have taken a lot of time to write, check, and recheck this page. It has very valuable and easy to read information on it, so please take your time when reading it and understand it completely before your appointment.

Shop Policies


Retunes are only applicable to ORIGINAL client who was tuned by Evans Tuning. If you purchase a car previously tuned by us, and are not the original owner/client the retune fee will not be honored. If you were tuned at another shop, and want us to tune the car a new tuning rate would apply. In addition, the appointment is only considered a retune if you are using the same system. Clients switching from one system to another will be charged the new tuning fee.

Race Gas

Tuning fees do not include race gas. Evans Tuning DOES NOT stock race gas. If you want a race gas or E85 tune, you will need to bring your own fuel.

Engine Damage Notice

If you are tuned on a particular type of race gas, you MUST run that same type of race gas when you run your race gas tune. I tune the car specific to the fuel that is being used. If you run a different fuel, engine damage can and will occur!

Spark Plugs

Evans Tuning stocks NGK spark plugs. We have series 7's, 8's, and 9's in stock for purchase during your tuning appointment. Pricing can be found on our online store. We recommend having at least one extra set for a tuning appointment if you do not wish to purchase them from us.

Engine Break-In

This consists of 5-10 miles of variable loading while under partial throttle and boost conditions to seat the rings while keeping air/fuel ratios under an optimal level. Several compression and leak down tests are preform during the course of the break-in to ensure that the rings are seating properly.


Please be advised that the tuning fee does not include the cost of labor if something needs to be fixed on your car.

Deposit Policies

The details about paying a deposit.

Deposit Policy

In order to schedule an appointment, we require a non-refundable $150 tuning deposit for new tuning appointments or a non-refundable $225 deposit for retunes before we guarantee an appointment. If you require parts for your tuning appointment the cost of parts must be charged in full to guarantee they will be in stock. We must receive the deposit at the time the appointment is scheduled. Appointments are guaranteed on a first come, first served basis. For instance, if you call to schedule an appointment, but do not pay the deposit at that time and another customer calls later that day and pays a deposit, we will not be able to hold that appointment for you. The deposit will be used towards your total bill on the day of your tuning appointment assuming one of the following happens:

Loss of deposit

You will lose your deposit if you do not give us one week (7 days) notice or if you simply do not show up for your appointment. Giving us 7 days notice means notifying us by the end of our business day, one week prior to the scheduled appointment. If you send us an email or call and leave us a message after we have already closed you will lose your deposit.

Deposits are not transferable

Please note that the deposit is non-refundable. If you decide that you do not want to have your car tuned by us, sell your car before your appointment, etc., your deposit will not be refunded. If we are notified at least one week in advance of this, we will put a credit on file for you that can be used towards a rescheduled tuning appointment or towards the purchase of products. Credits are valid for up to 3 months and is then forfeited.

Deposit Credits & Basemaps

If a tuning appointment is canceled but a basemap has been sent, the total deposit will be lost and can not be transferred into a credit on file.

Paying for your deposit

We will accept money order, personal check, cashier’s check, credit card, or PayPal for your deposit.

PayPal Address

Legal / Terms of Service

Legalities you need to know.

Any customer who purchases products/services through Evans Tuning (via online store, phone, in person, or email) agrees completely to the Terms of Service.

Methods of Payment:

Online Orders

In the event that our computer server/database encounters technical difficulties which causes problems with our product pricing, shipping calculations, or sales tax computations, Evans Tuning will correct all discrepancies at the time of processing. Customers will be notified of any errors and will have the option to continue with the order with corrected totals or to cancel the order. Evans Tuning will not be held responsible for any mis-calculated totals due to server errors.


Evans Tuning will only ship to the billing address on a credit card. The only exception we make to this policy is if there is an alternate approved shipping address on file with your credit card company. In any case where the customer requests to have their items shipped to an alternate address other than the billing address, we will call to verify that the alternate address is an approved shipping address.


In the event that a customer wishes to cancel an order, he or she will be charged a 10% cancellation fee if the order has not already been shipped. If the order has been shipped then please refer to our return policy. This 10% fee is to cover the costs associated with processing your order (we are billed fees when you place your order and when you are refunded for your canceled order).

Return Policy

Evans Tuning will accept items for return or exchange only within 14 calendar days from the date of receipt. All returns must have a Return Merchandise Authorization (RMA) number. All returns must be received within 7 calendar days after the RMA number has been issued and must be sent prepaid. No returns will be accepted COD. Receiving an RMA number does not imply a refund or replacement of the product, but only that we will inspect merchandise based on your claim. Original shipping and handling charges will not be refunded. Only merchandise that is unused and unopened in the original packaging in saleable condition will be accepted. Returns and exchanges will not be accepted on merchandise that has been opened, scratched, installed, mounted, or defaced. You must include the original sales receipt with your return along with a reason for the return. We will not be held responsible for parts that are ordered for the wrong application or for parts that are not legal in your State/City. Please make sure you are ordering the correct part for your car and that you check with local law enforcement officials before placing your order. All returns are subject to a 25% restocking fee. When issuing refunds on parts that were shipped with Free Shipping, we will deduct the costs involved in initially shipping the product to you and the balance will be credited to your account. Returns, cancellations, and exchanges will not be accepted on special order or custom order items. No returns on any electronic items including, but not limited to, engine management systems, boost controllers, ignition components, etc. Absolutely no returns on used product purchases will be accepted. All used parts are sold as is, final sale.

Refused Shipments

All refused shipments do not constitute the right to an exchange, credit, or refund. All refused shipment details must be arranged with Evans Tuning beforehand. Refused shipments are subject to a 25% restocking fee and all shipping charges.

Product Availability

We can not guarantee the availability of any product. We sometimes experience delays with manufacturers and are unable to ship a product immediately after it is ordered. We do our best to ship products in a timely fashion, but if a product is experiencing a manufacturer’s backorder we can not be held responsible. We will notify you of any backorders at the time your order is placed.

Legality of Products

Evans Tuning cannot and will not guarantee the legality of any product as rules and regulations regarding the use of all products sold and installed by Evans Tuning may vary from state to state. It is your responsibility to check with local law enforcement officials regarding these laws. If you violate these laws you may be subject to fines and/or penalties. Most all products sold by Evans Tuning are for off-road use only.


Evans Tuning offers no additional warranties on any products sold other than the original manufacturer’s warranty. Products will be submitted to the manufacturer for approval for repair or replacement. Customer is responsible for all shipping and insurance charges along with labor and inconvenience charges. There is no warranty on electronics, internal engine components, and turbo parts unless implied by the manufacturer.


Evans Tuning will provide a quote on installations based on the work you ask to have performed. We will require a 50% deposit before any work is performed and the remainder will be due at the completion of services. Evans Tuning reserves the right to refuse to install any product we deem necessary. Evans Tuning recommends that any products purchased be installed by professionals. Improper installation of products voids all warranties and will not be accepted as returns.

Tracking numbers

Tracking numbers will only be provided to customers who purchase products through our online store. The tracking numbers will only be sent to the email address provided by you during your online checkout. No tracking numbers will be given out over the phone.

Shipping Claims

If you suspect a damaged shipment, it should be checked in the presence of the carrier. All claims for damaged shipments must be made to the carrier. Evans Tuning will not initiate any shipping claims with the carrier. Claims must be made within 24 hours of receipt of the shipment.

Delinquent Accounts & Chargebacks

In the event that an account is/becomes delinquent or a chargeback occurs, Evans Tuning will forward that account into collections. If collections attempts are unsuccessful, Evans Tuning reserves the right to pursue legal action. The client agrees to become responsible for not only the original amount of the invoice, but any and all collections or legal fees.