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AFR, VE & spark table generator

Starting AFR target, VE and spark tables built from your engine specs.

The generator creates AFR target, VE and spark tables from your displacement, powerband, fuel and induction. You preview the generated values and apply them to the tune when you're happy with them.

How the tables are built

All three tables use the same idle, cruise, full-load, boost and overrun regions, worked out from your engine specs. The generator lists the assumptions it made so you can check them before applying.

After generating

The generated tables are a starting point for first start and early driving. Refine them with logs, tune checks and autotune. Generated spark values are estimates and should be confirmed with knock detection.

Example

You're starting a turbo swap with a blank tune. Generating the three tables gives you VE, AFR target and spark maps sized for your engine, fuel and boost range to start from.

The problem it solves

A borrowed base map comes from a different engine, and building three tables by hand takes hours. Tables built separately also tend to disagree about where idle, cruise and boost are.

At a glance

  • AFR target, VE and spark maps
  • Axes and operating regions from your vehicle specs
  • Preview before applying
  • Refine with real log data
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