Nitro OBD2 unit with interesting circuitry

Another Nitro OBD2 "Performance chip tuning box".
While there are actually real systems for adjusting the engine management settings on a small number of older vehicles, the majority of manufacturers seem to lock their engine control systems down quite tightly to avoid warranty and liability issues.
This is one of the many fake ones for people who succumb to the placebo power of blinky lights, and convince themselves that their car is more powerful and using less fuel. Some of these units do actually have microcontrollers in them that put on a fairly convincing "data exchange" light show like a network or modem. But the more recent ones have cost cut by implementing simple flashing light circuits. This one actually uses quite an interesting circuit that was well worth exploring, as a nice example of an op-amp oscillator.
Note that this unit poses a continuous 7mA current draw and will potentially assist in running your battery flat over time.
I love the fact that the button can be used to stall people looking for a refund by implying that they haven't used it correctly or put it in the right "mode". There's nothing quite like time and inconvenience to help people get over buyer's remorse.
"Press the reset button and give it another month to learn your driving characteristics."
"Press and hold the button for five seconds to change mode and try it again for a month."
"press the button five times quickly to put it into compatibility mode, and give it another month."
Temu are not a sponsor, I don't use their app or pay by card. I'm just having a Temu-moment in my quest to find dangerous or dubious devices from online sellers.
They don't use child slaves as they are just a selling platform like amazon and aliexpress.
Yes they exploit the postal system loophole like Wish and AlieXpress. The International Postal Union (not a labour union) controls that and appears to have dropped the ball.
If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:- www.bigclive.c...
This also keeps the channel independent of CZcams's algorithm quirks, allowing it to be a bit more dangerous and naughty.
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