Frequently asked Questions
Q: Where is DEFI Motorsports located?
A: We’re based in Corona, California, serving performance car owners, builders, and enthusiasts across Southern California and beyond.
Q: What types of vehicles can be tested or tuned at DEFI Motorsports?
A: We work with most performance vehicles including street builds, race cars, imports, and domestic high-horsepower applications. Our Mainline ProHub Dyno supports both two-wheel and all-wheel-drive configurations.
Q: Do I need an appointment?
A: Yes. All dyno sessions, ECU tuning, and group events require a scheduled appointment. You can submit a Service Request Form online to book your spot.
Q: How do I pay for services?
A: Deposits are paid online during booking. The remaining balance can be settled at our Corona shop after your service is completed.
Mainline Dyno Testing
Q: What is a dyno test?
A: A dyno (dynamometer) test measures your vehicle’s horsepower, torque, and air-fuel ratio under load. It gives you real-time insight into how your engine performs and helps detect issues before costly breakdowns.
Q: How long does a dyno session take?
A: Most single-vehicle sessions take around one hour, though this may vary based on your setup or additional tuning needs.
Q: What’s the cost of a dyno test?
A: Our Mainline dyno testing starts at $350 for the first hour. Additional time or specialized adjustments are quoted on-site.
Lease-A-Dyno
Q: Can I lease the Mainline dyno for my own customers or projects?
A: Yes! We offer in-house dyno leasing for shop owners, tuners, and performance specialists who need access to professional testing equipment without purchasing a unit.
Q: Can I take the dyno to my location?
A: No. All leased dyno use is conducted on-site at DEFI Motorsports in Corona to ensure safety, accuracy, and equipment protection.
Q: How much does it cost to lease the dyno?
A: Lease-a-Dyno rates start at $99 per day. Contact us for multi-day rates or special requests.
Group Dyno Events
Q: What is a Group Dyno Event?
A: A Group Dyno Event lets you bring up to 10 vehicles — whether it’s a club, shop team, or car enthusiast group — to test performance, compare results, and have some fun.
Q: How much does it cost to host a Group Dyno Event?
A: Pricing starts at $2,000 for 10 vehicles. Extra vehicles or extended time may incur additional costs.
Q: Can I host a private or branded event?
A: Absolutely. Many clients host private team or sponsorship events. Branding and photography options are available — just let us know during booking.
ECU Tuning
Q: What is ECU tuning?
A: ECU (Engine Control Unit) tuning optimizes your car’s computer system for better horsepower, throttle response, and fuel efficiency. It’s customized to your specific build, goals, and fuel type.
Q: Do I need to dyno-test my vehicle before tuning?
A: Yes, we recommend a dyno baseline test before tuning to capture accurate performance data.
Q: What tuning platforms do you use?
A: We support major tuning systems such as Cobb, HP Tuners, EcuTek, and Haltech. We can also calibrate custom setups upon request.
Q: How do I book an ECU tuning session?
A: Use our online ECU Tuning Service Form to request a session. You’ll receive confirmation and deposit instructions after submission.
