January 20, 2022

Cars that are built to race.



Ready to step up your game but not ready to commit to a full time race team? We have just the solution. We are located at the Motorsport Ranch in Cresson, Texas but provide support at events all over the country! MER has the equipment and crew available to offer trackside support and race management for your next race or event. You can have access to our experienced crew when you need them the most, on race day. We can provide the on-track support you need to be competitive.


  • Collect and analyze of telemetry and data
  • Perform alignments and corner balancing
  • Optimize your set-up
  • Manage tires, fuel, brakes, and other spare parts needs
  • Provide radios and manage communications from car to crew
  • Trackside repairs and fabrication

In addition to providing driver support at events all over the country, the MER staff is available most weekends at the Motorsport Ranch in Cresson Texas, come see us for help on your next track day or event! If you are located in the DFW area, we are a short drive southwest of Fort Worth.

The key to improving performance is measurement, that’s why we provide Dyno services for your car. Our Dynojet 248c Chassis Dynomometer will give you an accurate assessment of your car’s horsepower gains, it measures up to 1200 Rear Wheel Horsepower at speeds up to 200 miles per hour. The Dyno helps tune your car to perfection. Get a baseline report on your car now, the sooner the better. There are many modifications that can actually decrease peak horsepower. Without proper tuning, a car can’t take advantage of the modifications. MER’s Dynojet 248c is available for use on many weekends! Call us today to schedule a Dyno run!

  • $75 for 3 pulls
  • $150 per hour for Dyno tuning (MER tuning)
  • $250 per hour for Dyno tuning (self-tuning)

We also do NASA Dynos too!
If you are competing in NASA National Auto Sport Association races, we can help you complete your Official Dyno Certification Form. Download your forms here. Our Dyno is elevated for easy access to the oxygen sensors under your car for faster tuning. Make changes and see the results in black and white!

Motorsport Enterprises Racing is known for the race-winning MX-5 Cup cars but can also build race cars for any race series. Take a look at the MER photo gallery to see cars we peeped for other series’ including the awesome GTR we built for the Silver Stat Challenge. Converting a street car into a race car is more than simply adding a safety cage. MER uses years of experience building race machines to consider every aspect of the car. Most importantly the car needs to be safe, but we always consider performance and driver comfort too. MER can assist in preparing your car for any level of competition. We build custom roll cages, install race seats, five point harnesses and other safety equipment. We also build fire suppression systems, install engine oil coolers, transmission coolers, differential coolers, custom brake ducting, flat bottom flooring, splitters, wings, diffusers, and more.
Don’t take your pride and joy to a Quick Change! Let someone you trust perform basic maintenance on your car! We offer competitive rates on basic maintenance. Motorsport Enterprises Racing conveniently located next to Motorsport Ranch. If you are storing your car in one of the garages we can also offer pick up and delivery so your car is ready to go for the next day at the track. If you do not see the service you are looking for here, call us! We can perform anything from a oil change to a complete engine overhaul.

  • Motor oil and filter change – $25 (does not include oil or filter)
  • Most differential fluid changes -$100
  • Most manual transmission services – $110
  • Brake flush with Motul 600 – $100
  • Brake flush with Motul 660 – $120
  • Pre purchase inspection $50 (basic)

We stock proudly stock Motul and Amsoil. But we will use what ever fluids you want for your race car. Feel free to provide the fluids or let us know what you need and we will be ready to perform your service when you arrive.

If you can dream it, Motorsport Enterprises Racing has the expertise to build it. If you are thinking about racing the Street Touring Unlimited Class, we design all our motor swaps with the driver in mind. One of the fastest ways to change your street ride into a true “super car” is to swap engines. MER’s background in Mazda performance makes us the perfect shop to drop an LS1 into your Miata. When you start this you need someone that has done this before to get you on the right track, MER has experience to save you a lot of experimentation. We have done it before from LS3 V8’s in a Miata, LFX V6 engine in an RX8, LS1 V8 engine in an RX7.
You name it, we have already built it!

After we tackle the technical challenge of fitting the motor we have the electronics expertise to make it reliable and street-able. We can fit an ECU to match the new engine and wire it into the existing harness or build you an entirely new wiring harness if you are going full race.

As part of any motor swap, we also suggest having our suspension tuning experts make the necessary adjustments to the suspension to compensate for the new weight bias or additional weight. After all, you are going to need good handling to harness all of that horsepower.

Call today to discuss the possibilities!

We work on all things fast but we cut our teeth on high-performance Mazdas. With years of experience, we’ll get every ounce of performance out of your Mazda. We have the ability to perform compression test on rotary engines, handy for Formula Mazda cars. Compression numbers can be separately seen for all rotor faces. The device also corrects for the Mazda specified cranking rpms of around 250. Before you buy a rotary, we highly suggest getting it tested.

  • Compression testing – $100
  • Full rotary inspection with pre purchase inspection – $150.
Suspension tuning is an art, when you experience a car with the suspension tuned by MER you will wonder why you did not get this done sooner! MER does not rely on a fancy alignment machine, we do everything old school but our setups are hard to beat.

  • $150 for an alignment (most cars)
  • $395 for setups which includes corner balancing and cross weight (most cars)

Please call for price quote on your vehicle!

Motorsport Enterprises Racing is well versed in performance upgrades, we know what works! MER gets you on the right track. Before you spend big money on upgrading your race car or street ride call us to discuss. Chances are we have tried it before and we can help you get the most bang for your buck.

  • Wheels and tires
  • Suspension
  • Coil-Overs
  • Lowering springs
  • Brakes and big brake systems
  • Cold air intakes
  • Header and exhaust systems
  • Clutch and flywheel upgrades
  • Tuning
  • Short shifters
  • Weight reduction
  • Engine swaps

If you do not see what you are looking for on this list call us! If you can dream it, MER can build it.

MER currently has 5 track cars for rent! Take our car to your next track day and experience a track tuned Miata for yourself without the wear and tear on your daily driver. We are always expanding our rental fleet so if you have a suggestion or you do not see what you are looking for call us we may have just what you are looking for.

  • One NA Maita for rent – price differs on tire selection
  • 3 spec Miata’s for daily rentals – $700 per day
  • 1 MX5 for daily rentals – $700 per day

We will soon have an RX8 for rental

MER has the expertise to build a wiring harness for your race car or modify your existing harness for street cars with motor swaps forced induction or other changes to the ECU. The experts at MER can give you a quote based on your exact needs. Our wiring options can include an OEM style control unit with custom programming, fuel injectors, up-rated fuel rail, mass air flow meter, up-rated fuel pressure regulator, and an up-rated fuel pump. Also available, the AEM Infinity system.

MER does not use generic “one size fits all” kits. We build our systems specifically for your application. All wiring harnesses use OEM or better quality components. Tuning is also available! Once complete, the in-house Dyno provides accurate real time adjustments to the ECU.

If you are considering an engine swap or major modification to your engine, you owe it to yourself to call us first. We will get you on the right track!

Motorsport Enterprises Racing fabricates the best fit and strongest roll cages available anywhere. When you are ready to turn your street car into a race machine, give MER a call. Complete roll cages are built with the driver in mind. The foremost concern is safety as well as the driver’s comfort when building the cage. Years of experience separates MER cages from the rest. Tubing benders, welding and machine services are all under one roof so we can craft the perfect cage rapidly and get you on track sooner.

Our fabrication skills do not stop with safety cages, we can build virtually anything you need for your race car including:
  • Roll Cages (built to racing specification for any series)
  • Chassis Certification
  • Custom Wings and Spoilers
  • Splitters
  • Upgraded or Modified Trailing Arms A-Arms or Suspension Parts
  • Flooring
  • Custom Bodywork Mounts
  • Header Pipes
  • Chassis Updates
  • Motor Mounts for Motor Swaps
  • Suspension
  • Frame Connectors
  • Sheet Metal and more!

Call us, if you can dream it, we can build it!