As a dyno Naji uses a software package called Virtual Dyno that is set up for a car's particulars such as weight, tire size, gear ratio and calculated drag. 3rd gear pulls are done along a controlled road with a nearby weather station for adding ambient condition data. The Virtual Dyno software automatically calculates horsepower and torque from data extracted from data logging output. Note that this uses actual logged RPM data and thus calculates power exactly like a dyno does, not using an accelerometer which is dependent on the calibration and accuracy of the accelerometer.
|Naji Dahi of Looney Tuning is an excellent tuner for the Evo and STI. Here Naji works over Project Evo X.|
The Virtual Dyno software developers have even designed correction factors to correct their output to match several popular models of dynos. We selected the Dynojet correction factor simply because this is the most common dyno. Working with Naji we have found the road dyno software to be very repeatable to within 1-2 hp as long as we used the exact same controlled road area. The repeatability between runs is what is important for tuning.
To test Ran-Up we had done about 10 baseline and 10 after treatment runs. When we looked at the results we were pretty surprised!
|Our first example is one of our higher powered baseline runs compared to a lower powered run with Ran-Up, in this example we gained 5 whp. We were being very conservative. 5 hp is about the minimum of what we got.|
When reviewing our data, we were surprised to see that we had some gains, on every single Ran-Up equipped pass we made of at least 5 more whp! On one pass we made 11 hp. We did not want to report that result as that was cherry picking a low baseline run with a high post treatment run.
|In this run we gained 9 whp. It is important to note that in every single run we did with Ran-Up we gained at least 5 hp from what we had with just plain oil! The runs with higher power were our later runs, perhaps the Ran-Up had burnished itself in further.|
We were disappointed that the power outputs in the graphs did not show as pretty across the board power gains but more like gains in some parts of the powerband biased towards the top end. We are going to do our future testing on a chassis dyno to see if the dyno is more sensitive and has better resolution even though we have had good prior experience with Virtual Dyno. What is important to note is that we saw gains of 5 hp or more in every single one of our post treatment dyno charts and that the engine felt smoother and more responsive.
We also got about 0.5 mpg better on the first tankful with Ran-Up although that included some dyno pulls and tuning. We will report on how it does later. We suspect that we will get some better results in the mileage department later.
We like what we see with Ran-Up so far, we will periodically test it for power gains and fuel economy increases in other vehicles in the MotoIQ fleet in the near future.