Megasquirt Part 2: Bringing It Home
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The proof is in the pudding, or the dyno graph, in this case. With minimal tuning, we achieved a steady 11.8-12.0 AFR throughout the boosted areas of the fuel map. A misbehaving wastegate spring gave us unsteady boost after 4000 RPM, so the graph is a little choppy after that. If you're wondering why we shut the engine down at 6800RPM, it's because we forgot that the Miata's tach reads incorrectly. When we shut it down at an indicated 7300 RPM on the tach, the car was really at 6800 RPM. Whatever, we know the car's good for 260 wheel hp on 15 PSI and the MegaSquirt. All it takes is a little time (OK, a lot of time). View Related Article
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