Harry's GPS Suite Forum

Relatively new to using HLT GPE v24.5.2. Was able to setup a DUAL XGPS 160 and OBDLink MX+ without any issues. Getting data live like coolant temp, engine revs, gear, etc.

However, in Tires Mode, although the System Status is Tires in Green, pressures and temperatures never show up. Tested the PIDs below from the Miata Forum on my 4th Gen Miata 2022 using TorquePro, and they all work.

How can I get those to populate in the HLT Tires screen? Appreciate the help.

pid: 222A05
name: Tire 1 Pressure
sName: T1Press
Min: 0
Max: 50
Scale: x1
Unit: psi
Equation: ((A * 1373) / 1000) * 0.145037738
Header: 720

pid: 222A06
name: Tire 2 Pressure
sName: T2Press
Min: 0
Max: 50
Scale: x1
Unit: psi
Equation: ((A * 1373) / 1000) * 0.145037738
Header: 720

pid: 222A07
name: Tire 3 Pressure
sName: T3Press
Min: 0
Max: 50
Scale: x1
Unit: psi
Equation: ((A * 1373) / 1000) * 0.145037738
Header: 720

pid: 222A08
name: Tire 4 Pressure
sName: T4Press
Min: 0
Max: 50
Scale: x1
Unit: psi
Equation: ((A * 1373) / 1000) * 0.145037738
Header: 720

pid: 222A0A
name: Tire 1 Temp
sName: T1Temp
Min: 0
Max: 200
Scale: x1
Unit: F
Equation: (9/5 * (A - 50)) + 32
Header: 720

pid: 222A0B
name: Tire 2 Temp
sName: T2Temp
Min: -50
Max: 200
Scale: x1
Unit: F
Equation: (9/5 * (A - 50)) + 32
Header: 720

pid: 222A0C
name: Tire 3 Temp
sName: T3Temp
Min: -50
Max: 200
Scale: x1
Unit: F
Equation: (9/5 * (A - 50)) + 32
Header: 720

pid: 222A0D
name: Tire 4 Temp
sName: T4Temp
Min: -50
Max: 200
Scale: x1
Unit: F
Equation: (9/5 * (A - 50)) + 32
Header: 720

You can't. Tire temperatures and pressure is reserved to tire sensors. For OBD adapters, these parameters cannot be selected. The scheme should probably be generalized to allow any sensor / parameter mapping - but that's a long shot.

- Harry

Maybe the existing notion of Certified Vehicle Profiles could be extended to specific PID's? Meaning, use the community as a resource and have us submit known working PIDs with the Vehicle Profile to make existing OBD data easier on the developer to support. For example, I have a 2022 MX-5; I know from using other OBD tools certain PIDs that could be submitted. HLT Forum could vet / verify the profile and then have those imported when a user selects it? Just an idea, thank you.