PerfExpert - Car Onboard Dyno

3.8
771 reviews
10K+
Downloads
Content rating
Everyone
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image

About this app

Embark the efficiency of a true dyno inside your car!

Measure your real engine power and torque within 2% by performing a simple acceleration with your car!

Make sure your tunings are effective using a completely objective and independent way, without any excessive expense!

★ ★ ★ ★ ★

PerfExpert - Car Onboard Dyno & Timer allows you to measure the performances of your car, such as its real power, torque, and acceleration times. It doesn’t require any connection to your car. Results are provided as detailed reports featuring interactive charts.

How does PerfExpert dyno works ? It's simple :
1. Create your car profile => Describe your car to PerfExpert by providing information such as curb weight, tire sizes or engine displacement. If you don't know how to find your car's specifications, we help you to do so.
2. Mount your phone in your car => No need to connect your phone to your car. With your phone firmly mounted inside your car, PerfExpert can rely on its internal sensors to measure the real acceleration of your car.
3. Accelerate through the entire engine rev range => On a flat, straight and horizontal road, perform an acceleration from low rev to the maximum rev, keeping the same gear : that's it!

IMPORTANT : dyno test is not compatible with automatic gearboxes that doesn't have a manual mode.

With such a tool, you can check the efficiency of your various tunings, ECU mapping, chiptuning, and even your chassis settings.

Using the specification of the tested car and your device’s accelerometer, the application runs our algorithms and dynamic power loss calculations to provide the performances of your car with high accuracy.

Skeptical? Here is a selection of comparison tests between “PerfExpert - Car Onboard Dyno” and real chassis dynos, performed by some of our users : http://bit.ly/perfexpert_vs_chassis_dyno

For further information, you can find our FAQ at http://tuning.perfexpert-app.com/f-a-q

Here are sample dyno and timed run reports created using the application :
http://network.perfexpert-app.com/results/featured

Join now PerfExpert community:
- Facebook: http://www.facebook.com/PerfExpert
- Google+ : https://plus.google.com/+Perfexpert-app/posts
- Support : https://www.facebook.com/groups/perfexpert/

Features:
- Dyno test : measure the power and torque of your engine with advanced loss calculation model. Detection of the engine rev limiter. Detailed reports featuring interactive charts of wheel and engine horsepower and torque / engine speed, just like a regular chassis dynamometer.

- Compute corrected power and torque using the correction norm of your choice (atmospheric pressure, ambient temperature and air humidity are taken into account). Available standards: DIN (Europe), SAE (America), JIS (Japan), CEE (Europe) and ISO (International).

- Timed Run test to measure your 0-60mph, 0-60ft, 0-1/8mi, 0-1/4mi, 0-100km/h, 0-20m, 0-200m, 0-400m, and much more.

- Use of your phone accelerometer at its maximum frequency and advanced signal processing for smoothed curves.

- Custom choice of units from a large choice: Hp, Ch, Cv, Kw, Nm, Ft.Lb, mKg, Mph, Km/h, m, ft, G, m/s², psi, inHg, mBar, °C, °F

- Export reports in Tab Separated Value format and PNG

- Compatible with most tablets (GalaxyTab 10.1, 8.9, Nexus 7, Nexus 10 ...) and high-resolution screen phone (Nexus 4, Nexus 5, Nexus 5X, Galaxy S3/S4/S5/S6/Edge, Galaxy Note, Galaxy Nexus, HTC One X, LG G2...)
Updated on
Jul 14, 2020

Data safety

Developers can show information here about how their app collects and uses your data. Learn more about data safety
No information available
3.8
771 reviews
Brian Neimoyer
May 23, 2020
Had high hope for this app. It is very detailed and the configuration for you car is very technical and specific which I like alot. After I went through the calibration and car set up I could not dyno my car even on a smooth road because my sport springs are to stiff and the app gives an error message because of this. I will not change my race suspension for this to work properly. I will request a refund. It is a good app for a Lincoln Town Car.
4 people found this review helpful
Did you find this helpful?
PerfExpert
May 31, 2020
Hi Brian, PerfExpert is compatible with very race car stiff suspensions. From what you wrote, we would say that you tried to start the test while the car was still rolling. Before pressing the START button to initiate a test, you should make sure you stopped completely the car, please check the tutorial : https://youtu.be/WjLsbmhMo_A
A Google user
December 4, 2019
Looks like a decent app but can never get a successful run. It always throws an error with some reason why it can't produce results. I get that they are trying to be as accurate as possible, but I would rather see a warning that results may be off then constantly stonewalled.
7 people found this review helpful
Did you find this helpful?
PerfExpert
May 31, 2020
Hi Chris, thanks for your feedback. The app is very permissive, that's why some users are getting wrong results when they don't use it properly. If you can't even get a result, this means at least one of the mandatory conditions to run a test was not meet. Please contact us at support@perfexpert-app.com so we can help you solving this.
Dawid Harasim
June 15, 2020
It's simple. Calibration may take couple tries if you do it wrong. I guess calibration pictures in the app could benefit from written words what's up and down, front and back. One of the pictures can be a bit of a guess. After that? You put the data, ACCURATELY. Stop the car, have the phone secure at acceptable position. Which is easiest thing in the world to do. You get green light, you drive. And results shown are very accurate, I've tested it on plenty of cars. Great app.
13 people found this review helpful
Did you find this helpful?
PerfExpert
June 27, 2020
Thank you for your great feedback!

What's new

Fixed weather data retrieving.