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The Key to a Perfect Tune is Understanding the Data!

View, Analyze, Tune.. Tuning from data, simplified!

Features included with registered Dyno Spectrum Viewer
Now visualize your data in a way you never could before to quickly identify problems or opportunities. Load both the data log and tune settings, viewing together. Capture long log files and easily navigate through the data, apply built in analytics, custom formulas and simplified views.

3 Axis Scatter Plots allowing you to view an entire log files in a single comprehensible view. When combined with the calculated and custom fields, this has proven to be a very powerful tuning aid.
Histogram / Table generator. Generate a table of spark timing, VE Values, AFR, AFR Error or any other combination you can dream up.
No file lenght limit.
Navigate quickly through hundreds of thousands of records long.
Zoom in and out.
View any 32 grouped Fields.
Compare mode - Overlay second file values
Play back of log files syncronized between all tabs.
Create your own Calculated Fields - RPM/Sec, Vacuum, Boost, PW-1. See Advanced Math.
Customizable colors, gauges and UI features.

The Power of Histograms and 3D Scatter Plots

Histograms / Table Generator

Picture being able to select any field for your X, Y and Z axis and instantly have a table generated with statisics on the data!
Generate a table of spark timing, VE Values, AFR, AFR Error or any other combination you can dream up.
Then dive deeper in to that data by applying filters that may remove unwanted data or help explain what inputs are behind the table. Filters can be clicked on and off with a near instant rerendering.

See exactly how far off every cell of you fuel table is by processing all the data in your logs.
You can plot your spark or AFR table, see where in on the maps knock is occuring. The uses are endless and limited only by the data in your logs.

3D Scatter Plots

The Scatter Plots built in to MegaLogViewer are no ordinary Scatter Plots. Most Scatter Plots are designed for small data sets, MegaLogView is designed to render Tens or hundreds of thousands of data points instantly. Make changes, apply new filter limits, change fields, you see it all instantly. Since the introduction of Scatter Plots in MegaLogViewer users have found so many amazing ways to make tuning faster and simpler.
Check out this example Scatter Plot of RPM vs MAP with AFR on the Z Axis. All at once you can look at the data from an entire 45 minute drive in one picture, instantly seeing rich and lean sections of the fueling table.

Scatter Graph

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