I bought the GAP IID tool and the Icarsoft tool. I was disappointed that the GAP IID tool is limited to what I can do to modify the CCF parameters. I'm still looking into that limitation.
The Icarsoft tool provides more detail about the modules in the vehicle such as the software version, serial number etc. It showed the serial number and VIN of the Blind Spot Module I purchased used. Couldn't find any way the GAP IID would do that.
I had a BlueDriver OBD tool fbut it provides mostly data, related to the check engine light. But it was useful to check my SMOG check readiness. I replaced the battery on my LR4. This erases all the stored data for the oxygen sensors etc. so they will fail the SMOG test and tell you have the drive the vehicle so the computer can record the values. The BlueDriver OBD tool showed it was not ready for the SMOG test.
The Icarsoft tool provides more detail about the modules in the vehicle such as the software version, serial number etc. It showed the serial number and VIN of the Blind Spot Module I purchased used. Couldn't find any way the GAP IID would do that.
I had a BlueDriver OBD tool fbut it provides mostly data, related to the check engine light. But it was useful to check my SMOG check readiness. I replaced the battery on my LR4. This erases all the stored data for the oxygen sensors etc. so they will fail the SMOG test and tell you have the drive the vehicle so the computer can record the values. The BlueDriver OBD tool showed it was not ready for the SMOG test.