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Adding a note about stop-and-go for TSSP vehicles via the SnG hack

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Amit Gupta 2021-09-05 22:16:23 -07:00
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Toyota-Lexus.md

@ -129,6 +129,8 @@ The Driver Support Unit is what controls AEB and longitudinal on TSSP cars. This
TSSP vehicle owners have the benefit of choosing to use openpilot or stock ACC, this is not an option for TSS2 vehicle owners. SmartenedDSU owners may also have the option to switch between stock and openpilot for each drive.
It is possible to enable OP stop-and-go in TSSP vehicles with a non-zero value for "no ACC accel below" on the [official supported cars] list(https://github.com/commaai/openpilot#supported-cars) with an SDSU and [comma pedal](../wiki/comma-pedal). Some models may have luck with only an SDSU and the 2-line "SnG hack". See the discord for more information.
### Stock vs openpilot Longitudinal Control Differences
Both systems work well and there are numerous people who prefer one system over the other. Generally, the stock ACC is slower to accelerate from a stop and will keep a larger following distance as low speed. openpilot on the other hand accelerates more aggressively and maintains a closer distance at low speeds but a larger distance as high (freeway) speeds. Some hybrid owners prefer the stock system because its gentler acceleration profile means less use of the internal combustion engine in traffic.