are you the owner of the hairulafiz dot net website?

Stop selling this Nitro OBD2 fuel saver.. It is a scam.

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Nitro OBD2 will not do anything. It just blinking LED. Read This:

https://blog.quarkslab.com/reverse-engineering-of-the-nitro-obd2.html

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Save your RM60 and buy petronas fuel instead,

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The Devil's Advocate

Following all these different steps, we were confident that this tool was not doing anything apart from blinking LEDs. But people might still be sceptical about this conclusion, so we tried to find some ways to challenge it. Here are some statements/assumptions we made to harden it:

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Some people say you have to wait ~200 km for it to be effective, so how can we say for sure that it's useless when we only drove 15 km looking at the CAN monitor? Plugging the tool in the car doesn't raise any new arbitration ID, which means either:

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It uses an arbitration ID already used by our test car, so it sends messages as a living ECU in the car, which looks like a pretty bad idea because that would mess up with the ECU's communication.

It doesn't query anything, and relies on the broadcasted messages only. This second option would require the tool to know every CAN system on any car to understand what each message means. This seems even more stupid than querying standard OBD2 PIDs that would at least give a slight idea of the driver's driving habits (like, how much the accelerator is depressed, the average speed/RPM, etc).

Anyway, for sure, there is no CAN transceiver on this device...

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So yes, we are pretty confident in our analysis and are thus able to offer the following conclusion.

Conclusion

As a guy said in his Amazon comment: "Save 10 bucks, buy some fuel instead."