From what I understand, an ideal internal combustion happens with a 1:12.5 gas:air molecular ratio. And these days in modern cars, there are already sensors to adjust the amount of fuel injected to ensure this. So when people tune their engine, what are they changing? Are you going to get any better performance than a 1:12.5 fuel ratio?
In: Engineering
Tuning generally involves more than just changing values. Typically you “tune”after you upgrade parts. For example you may install aftermarket injectors, pistons, exhaust, etc.
If I install aftermarket pistons, intake, and exhaust systems which may allow for a greater quantity of air/fuel to be delivered to the combustion chamber I would need to adjust the software in the main brain of the car to compensate for these upgrades.
Factory specifications include lots of liability “buffers” For example cars built in the US have to adhere to certain environmental laws. You could change specifications to bypass some liability functions. So there are ways to get short term improvements in power. However without upgrading components this kind of adjustment puts you at greater risk for part failure or even breaking the law (depending where you live)
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