The 'black box', as I prefer to call it can either contain nothing more than resistors with some electronic switching circuits with flashing LED displays to impress you...
...or more complex one has microprocessors to work in tendum with the ECU.
In both cases the black boxes 'fool' the ECU to make it 'think' the engine is running cold hence increase the amount of fuel delivery into the engine. It works best on forced induction engines at the expense of fuel consumption at low end of the power band where there is still surplus of boost pressure though.
...or more complex one has microprocessors to work in tendum with the ECU.
In both cases the black boxes 'fool' the ECU to make it 'think' the engine is running cold hence increase the amount of fuel delivery into the engine. It works best on forced induction engines at the expense of fuel consumption at low end of the power band where there is still surplus of boost pressure though.
A more complex black box has microprocessor/controller to sustain higher boost pressure proportional to the amount of fuel being injected into the combustion chamber hence higher torque. Of course the car may accelerate quicker but can not be maitained long enough as the engine rpm is increased. Bare in mind that it is NOT the gain in maximum bhp as claimed.
Nevertheless around the middle of the power band (beyond the surge line as shown in the chart below) the amount of boost pressure is almost at its limits and slowly drops towards the higher end as the stock turbo can no longer meet the demand of the air volume flow rate.
The black box or the remap still can fool the ECU to inject more fuel but the engine will be out of breath hence no more power gain even how much the fuel is available to be burnt. Thats why there lots of carbon soot at the tail pipe! So does the fuel consumption.
The black box or the remap still can fool the ECU to inject more fuel but the engine will be out of breath hence no more power gain even how much the fuel is available to be burnt. Thats why there lots of carbon soot at the tail pipe! So does the fuel consumption.
Theoretically without changing to bigger turbo unit or/and increasing the engine compression ratio it is impossible to increase maximum power output by just installing a black box or remap!
Again... that's why 175BHP and 200BHP EP6-series engines have bigger turbo unit for higher power output. Don't assume the EP6-series engine designers are stupid for not just using 'black box' circuitry or remapping the ECU to increase the maximum power. Think about it.
p/s who knows in side of your RM1800 "Tuning Box" could be just like this ...(hint..hint!!)
p/s who knows in side of your RM1800 "Tuning Box" could be just like this ...(hint..hint!!)
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