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kastein posted:If anyone knows the difference between the two tables for each sender linearization I would love to hear it. For each tank there is a "xxx Volume" and a "xxx Volume gauge" table. I'm guessing that the one with the gauge suffix affects the gauge, while the other one affects... who knows what?
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Sep 8, 2023 16:19
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| # ¿ May 12, 2024 08:33 |
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kastein posted:After looking through what I would describe as a buttfuckton of tunes from the hptuners tune repository, it looks like all 02- operating systems used a single table per tank while all 03+ operating systems use two tables per tank. Can anyone think of anything fuel and emissions related that changed from 02 to 03 that would be affected by this? "We need to finalize the firmware soon. We're going into production with fuel tank A, but we might switch to fuel tank B in a few months. So put both tables in the firmware and then if we switch we can send a message on the production line telling the firmware to use tank B's table." And then the issue never came up again and the firmware team started putting the same values in both tables, just in case that message gets sent accidentally. It's easier to change data than code. The "gauge" label probably came from hptuners' reverse engineering when they noticed one table was a slightly smaller capacity and assumed it was a pessimistic value for the dashboard. But the difference is 0.44 gallons at most which doesn't seem like a reasonable reserve.
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Sep 9, 2023 17:26
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