Dinan not only makes high quality parts coveted by European sports car owners everywhere, but they also put a lot of thought into what they do.

Unlike many aftermarket auto parts manufacturers that only claim how effective their upgrades are, Dinan actually backs up their claims with numbers. In other words, they run dyno tests on all of their engine tuning parts and then publish the results as a part of the product description. Because of this, customers know exactly what to expect from Dinan engine tuning parts in terms of torque and horsepower.

Why Dinan Runs Thorough Dyno Tests Instead of Using a Dynamometer


Dinan could've taken the easy way out and simply put the car on the dyno for an hour to get data. But they decided to be as thorough as possible by duplicating "real world" conditions and tracking the numbers in real time.

Dynamometers can be pretty sophisticated, but they're still not a substitute for scientific testing procedures, nor do they provide a deep understanding of the factors that produce the numbers. In other words, dynamometers don't provide well-rounded results.

Combine Dinan's years of experience producing engine tuning parts with controlled testing procedures using the very latest equipment, and you've got valid test data that's as accurate as can be. In fact, automotive journalists have been commending Dinan for its realistic and verifiable performance data for about 25 years.

How Dinan Runs Their Tests

Dyno 4

Dinan understands that accurate measurements can only be achieved when the dyno tests are conducted in a manner that simulates the car driving down the road as much as is possible. That's why they put together an elaborate setup and stringent procedures for dyno testing their cars.

Once Dinan gets a test car, they start the dyno testing process. Here are the steps they take:

  1. Inspect the car for any defects that might affect performance. They run tests to see if there are any issues related to oil consumption, for example.
  2. Repair the car if necessary.
  3. Install sophisticated data collection equipment on the car. More specifically, equipment that measure the:
    1. Air/fuel mixture
    2. Ignition timing
    3. The engine's air intake temperature
    4. The engine block and radiator coolant temperatures
    5. The engine, transmission and differential oil temperatures
  4. Take the car out for a test drive on the road while recording all the data (once the temperatures have stabilized). They conduct several test drives in order to obtain a solid average.
  5. Record the times necessary for the stock car to achieve various speeds and then load it into the dyno program to simulate road conditions.
  6. Run a series of tests with the car in the dyno room with a large fan and equipment that connects directly to the drive wheel axle. During this step, they compare the parameters and temperatures against the data they got on the road. The goal here is to match the parameters and temperatures to the actual road conditions as closely as possible.
  7. Install the Dinan parts on the car.
  8. Run the same tests the next morning when the temperature is as close as possible to 77° F.
  9. Compare the results against the results from the previous day to determine the performance gains caused by the newly installed Dinan parts.

The Dinan Car Development Program

Dyno 2

Instead of spending hundreds of thousands of dollars on new models in order to run tests on them, Dinan borrows BMW, MINI, and Mercedes vehicles from people who already own them. Even though car owners will have to part with their cars for 2 weeks, they'll still enjoy some benefits of having Dinan run tests on their cars. The biggest benefits are:

  • Free Dinan parts already installed on their cars (which won't void the warranty)
  • Performance boost

When Dinan borrows a car, they install relevant parts on the car and then run a series of tests to yield accurate performance results.