Junglur

I've got a G4+ Storm and was wondering if I could use it in like a read only data logging mode? The ECU is destined for another car, but before it ends up there I was wondering if I could sort of wire it in sort of piggy back to the factory ECU on another car and let the factory ECU actually run the car but the Link datalog the inputs I've wired into it? Hopefully that makes sense lol.