PerfExpert vs PerfectPower Usage & Stats

Embark the efficiency of a true dyno inside your car! Measure your real engine power and torque within a 2% margin 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 is an application allowing 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 https://www.perfexpert-app.com/faq Here are sample dyno and timed run reports created using the application : https://network.perfexpert-app.com/results/featured Join now the growing PerfExpert community: - Facebook: https://www.facebook.com/PerfExpert - 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

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PerfectPower

PerfectPower, the automotive reference on-board system in power and performances measurements! PerfectPower is, in the form of a revolutionary smartphone application, the automotive reference on-board system in power and performances measurements, the one with the best price / reliability of results / variety of features / operational independence ratio! Seven major goals: - Measure the standardized engine power (DIN, CEE, SAE, JIS, ISO) of your car - Measure the performances of your car (accelerations, runs flying start, max speed, braking -soon available-) - Simulate the performances of your car (accelerations, runs flying start, max speed, ideal max revs) - Perform engine development with the same efficiency as on chassis dynamometer - Being able to calculate the gearbox ratios by rev calibration (as on chassis dynamometer) (soon available) - Being able to measure the freewheeling losses (soon available) - Measure lap times on track And it achieves all this with an exceptional accuracy established theoretically AND proven in practice of +- 1% for power measurements, which are both its speciality and the most interesting measurements of all in automotive physics! Such accuracy is made possible by the accurate, permanent, and clever combination of the informations of the phone accelerometer and the GPS, knowing how to take the best of both sensors while eliminating the specific disadvantages when used individually. What - useful precision - is not done without efforts: it is the result of hundreds of hours of work, but also of high skills in physics and mathematics, that myself David Mettey creator of the application have, both by my training (engineer with two Bac +5 degrees in Physics) and my experience ((calculation engineer at Citroen Sport and test bench developer at Air France Industries). Such accuracy can even be further improved and go well below the % by using the best external GPS on the market, the RaceBox Mini & Mini S (25 Hz & 0.3 m average horizontal accuracy thanks to the use of differential techniques), soon driven by PerfectPower (November 2024). Of course, there are a certain number of rules to follow to achieve optimally accurate measurements (the most important being to perform measurements in both directions of the road -and on the same portion- and to ask PerfectPower to average them in order to eliminate the effects of road slope and wind), BUT when these rules are well followed, PerfectPower has proven that: - It was as accurate for power measurements as the best chassis dynamometers (Rotronics -France-, Maha -Germany-, DynoJet -USA-) - It was as accurate for acceleration measurements as the best external GPS, the RaceBox Mini & Mini S itself - It was significantly more accurate than any other smartphone application in the field It's so true that I didn't hesitate to launch a friendly but very clear challenge of 10,000 euros & dollars on May 1, 2024 on this subject, and ideally I would like an American or an American company to take it up, simply because I love the USA and New York in particular where I live 50% of the time, and once this challenge is won I will have no trouble settling there permanently! All information on all this on the official website www.perfectpower.ch