![]() IGN: 13 = Very hard to hold, happens at about 1100 rpm on the HW.Here's a clip from Wayne's Prius Thread about SH mode.ĭial in IGN as one of your gauges and watch what happens when hold IGN of 14. What I've seen is that IGN 14 can happen at 1600 RPM in the city and 1200 RPM for the highway. What RPM and advance of 14 yields varies widely based on speed, which explains some of the odd numbers that jump out on HW segments. Anyway, for the Prius, the ECU seems to hang out on an IGN of 14 whenever it's feeling really efficient. Low numbers are better than high numbers. The ECU will slide this number around as you vary the power demand on the engine. Google told me that Ignition Advance (IGN) has to do with when in the power stroke to spark the fuel. Basically it's another "drive-to-a-number" technique, but instead of driving to RPM, you drive to IGN. The elusive part is that it looks like it's BELOW the loafing zone for highway driving. ![]() ![]() There seems to be a sweet spot right before the injectors cut out on the way to Warp Stealth. If your not following Wayne's Prius II thread, we found an interesting spot on the efficiency curve for the Prius II. Update: Jump to post #163 for some new revelations. ![]()
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