Q: You do not have diameter/size/length that I need of a product?

We frequently fabricate one-off versions of our parts for home mechanics, and for performance shops. Please email us, sales@performancemrp.com, with the details of what you need for your project and we will reply promptly.

Q: Will deleting the secondary air injection system cause my check engine light to come on?

Yes, deleting your secondary air injection system will cause your check engine light to come on. This can be corrected with tuning. Modifying any part of your emissions system is for off-road use only vehicles, please be aware of your local laws before modifying your vehicle

Q: What is an air straightener, and what are they used for?

Performance MRP honeycomb air straighteners screens, available in 5mm & 6mm cell sizes, are aerospace grade 5052 aluminum honeycomb. Our air straighteners are suitable for high-temp applications, they will hold up to being exposed to fuels as well as methanol injection. Our air straightener screens are used to aid in creating a laminar air flow at the mass air flow sensor. This will improve readings “fuel trim” from the MAF sensor, that ECU is seeing. Fix lean and rich spikes, increase throttle response, and improve idle.

Q: Is tuning required when I install a larger/smaller diameter mass air flow housing?

Tuning is application dependent. Generally speaking, tuning will be required when you increase/decrease the diameter of your mass air flow housing.

Q: I can not find the product that I need, can you help me?

Yes, we frequently work on custom projects for individuals as well as manufacture proprietary parts for performance companies, Performance MRP has a full service machine shop that specializes in prototype & production machining. Please email, sales@performancemrp.com, with a description of what you need, a blueprint or drawing of the part if possible, and any photos that you may have. We will reply promptly.

Q: How do I install an air straightener in my intake or MAF housing?

Your air straightener screen should be installed in the intake track before the mass air flow sensor. Typically air straighteners are installed 2-4 inches from the sensor. The air straightener screen can be installed using glue, epoxy, by brazing, or riveting. Performance MRP installs all of our own air flow straightener screens using rivets.

Q: Do you offer wholesale pricing?

Performance MRP offers wholesale pricing to re-sellers as well as fabricators that are interested in purchasing quantities of our products. Please Contact Us if you are interested in becoming a wholesale customer. Please include business name, first/last name, phone number, address, name of product/s that you are interested in, & an estimated quantity of products that you are interested in purchasing.

***Setting up a wholesale account will typically take less than 24 hours. 

Privacy Policy

Q: Updating Personal Information

If you are a registered member at Performance MRP, you can change your personal information at any time by updating your information at checkout.

Q: Links

This Privacy Policy applies only to the information collected on this site. Our site may contain links to or from other websites and you should be aware that we are not responsible for the privacy practices of other websites. We encourage you to read the privacy policies of other websites linked to the site.

Q: Information Collection and Use

Performance MRP is the sole owner of the information collected on this site. When you shop on our website, we collect personal information from you such as name, address, email, phone number and/or credit card information. This information is used for billing purposes for filling customer orders, contacting customers to inform them of order status and sending promotional information. We will not sell, share, or rent this information to others in ways different from what is disclosed in this statement. Performance MRP collects information from our users at several different points on our website.

Q: Fraud Protection and Compliance with Law

We may disclose any information, including personally identifiable information, we deem necessary, in our sole discretion, to comply with any applicable law, regulation, legal process or governmental request. We may also exchange information, including personally identifiable information, with other companies and organizations for credit fraud protection and risk reduction.

Q: Cookies, IP Addresses, Pixel Tags, & Tracking Technology

Performance MRP may place a "cookie" on your computer's hard disk so we can recognize you as a return user and personalize your experience. A cookie is a piece of data that enables us to track and target our customers preferences. The cookie will be stored on your computer's hard disk until you remove it. We may also use temporary or "session" cookies to help you shop. These cookies will expire when you place an order. You can have your browser notify you of, or automatically reject, cookies. If you reject our cookies, you may still use the site, but you may be limited in the use of some of the features. Cookies can not be used to run programs or deliver viruses to your computer. In addition, we may use IP addresses to analyze trends, administer the site, track traffic patterns, and gather customer information.

Q: Contacting Us

We welcome your comments and questions about privacy. Please send an email to sales@performancemrp.com We are confident that your visit to Performance MRP is secure and safe. However, you may choose to call us directly to place your order over the telephone. Please call Customer Service toll free at 1-603-435-5337.

Q: Changes to This Statement

Performance MRP will occasionally update our Privacy Policy to reflect feedback from our customers, and our company. We encourage you to periodically review this statement to be informed of how Performance MRP is protecting your personal information.

Shipping & Returns

Q: What domestic shipping options are available?

Performance MRP ships via United States Postal Service (USPS) & UPS

Shipment Method Estimated Transit Time
USPS First Class Mail 2-7 business days
USPS Priority Mail 2-3 business days
USPS Priority Express 1 business day
UPS Ground 2-7 business days
UPS Standard 2-7 business days
UPS 2nd Day Air 2 business days
UPS 2nd Day Air A.M. 2 business days
UPS Next Day Air 1 business day
UPS Next Day Air Saver 1 business day
UPS Next Day Air Early A.M. 1 business day

*Estimated transit times only apply to the continental United States

*UPS does not deliver to PO boxes

Q: What could cause a shipping delay?

Shipping delays can occur if the wrong shipping address is provided. If the shipping company can not deliver the package we will contact you via email or phone.

Shipping time may vary during holidays. Shipping times may be affected by inclement weather.

Q: Do you ship to Alaska and Hawaii?

Yes, we ship to both Alaska and Hawaii. Shipping is via USPS or UPS

Q: Do you ship outside of the USA?

Performance MRP is now offering International Shipping. If your country is not currently listed, please email us at sales@performancemrp.com to complete your order.


Q: Is there a cost on returns?

Performance MRP truly believes in providing our customers with the most hassle free shopping experience possible, part of this belief includes hassle free returns. If an item needs to be returned please click on the returns portal link below, our system will automatically generate an RMA and we will cover the return shipping cost of your item. The amount of the refund will be based on the purchase price of the product.

*If an item is being returned due to Performance MRP shipping the incorrect item, we will reimburse purchase price, & shipping.

Q: How do I return a product to Performance MRP?



Please contact Performance MRP, sales@performancemrp.com, for return instructions if you do not wish to use the returns portal.