7M-GE AFM = Reports Voltage to the ECU
7M-GTE AFM = Reports Frequency to the ECU.
As already stated, the only reason to fit a Lexus AFM is for GTE people who are hitting fuel cut. As you're not hitting it, and not even running a turbo, it's entirely pointless. The AFM on the GE is already larger than it needs to be for the engine. If there was a bolt-on upgrade, it would still be entirely pointless.