What's new in V1.36.0
V1.36.0 is a feature release with three headline changes. Each one targets a different kind of build, so it's worth knowing which apply to you before you flash.
Generic CAN: send and read the data you choose
Generic CAN now lets you customize both the data the ECU transmits and the data it receives. It works across all three networks: the Haltech CAN bus, the vehicle CAN bus, and third-party CAN buses.
This is where swap builds and mixed-brand electrical systems get easier. Think of aftermarket dashes and loggers from other brands, power distribution modules, keypads and controllers, or factory modules that expect specific data before they'll behave. Instead of working around a fixed message set, you decide which channels go out and which values come back in.
You'll still need the other device's CAN specification (message IDs, byte layout and scaling) to set it up correctly. If CAN is new to you, start with our CAN bus overview.
Output testing on every output pin
Output test mode can now drive every HBO, DPO, HCO8, HCO25, injector and ignition output pin, assigned to a function or not. On a fresh install that means you can prove each wire lands where the wiring plan says before the engine has ever turned over. It's also a quick way to check a spare pin before you commit it to generic outputs or a new function.
Firing an injector sprays fuel into the engine, and pulsing a coil can create a spark. On an assembled engine, make sure the rail can't be primed or the coils are unplugged before you test those outputs.
Ti6L: read and reflash the 6L transmission OS
If a Nexus Ti6L transmission interface controls your GM 6L series automatic, the ECU can now read the operating system firmware already in the transmission, download it, and reflash the transmission to a supported OS. That's handy when a used or swapped transmission shows up running software the Ti6L doesn't support. Our Ti6L article covers the kit itself.
Before you update
- Update NSP first, then flash the new firmware from inside NSP. If the updater won't connect, see the NSP updater TLS requirements.
- Save a copy of your current calibration before flashing.
- Afterward, check your sensor readings and outputs before you drive the car hard.
Should you update?
Yes if you run a non-Haltech dash, PDM or controller over CAN, use a Ti6L, or are about to power up a new install. Otherwise there's no rush, but it's a useful release. At the time of writing, Haltech hasn't posted full notes for V1.36.0 on its support site, and we'll expand this page when it does. For earlier releases, see V1.35.5 and V1.34.3. Would you rather we handle the update and check the tune afterward? Get in touch.
