Tune from log
Drive. Tap.
Drive. Tap.
Fueling dialed.
The repetitive part of tuning, binning thousands of log samples into table cells and doing the math on each one, is exactly what a computer should do. TuneBench does it on your phone in a second.
How it works
- Log a drive. Record in TuneBench, or import a CSV from any logger: HP Tuners VCM Scanner, EFILive, TunerPro, a wideband controller, anything with a time column.
- Pick what to correct from. Wideband AFR versus commanded AFR, short plus long term fuel trims, or knock retard for spark tables.
- TuneBench bins every sample onto the table's own RPM and MAP (or airflow) axes and averages the error per cell, dropping cells with too few hits.
- Preview. Every cell shows its proposed change in color. Set the strength, the maximum change and the minimum sample count.
- Apply in one tap. Changed cells are tracked against stock and every apply can be undone.
Write your own formulas
Presets cover VE from wideband, MAF from wideband, trims and knock. For anything else, write a formula with real channel names, like ([Wideband AFR]/[Commanded AFR]-1)*100 and [Table]*(1+[Log]/100).
Stop doing correction math by hand.
Free to read, edit and log. License a Gen III LS for $50 when you're ready to write.