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Has anyone tried the modification being sold on ebay for about £5.00? Apparently it is a resistor connected in series between a sensor and the ECU. Does anyone know the value of the resistor and which sensor is being used? Does it work and are there any problems associated with this modification?
 

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It's been discussed before.
But here goes..

The resistor simply tells the ECU the engine is always cold, this enables the cold start enrichment program.

Downsides:
Huge increases in fuel consumption
Overfueling, which can lead to engine failure due to the bore lubrication being washed away by an excess of petrol..
 

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The device goes between the manifold absolute pressure sensor (MAP) and the ECU.

The MAP sensor provides the ECU with a signal, voltage proportional to pressure.

I believe this device just reduces the voltage seen by the ECU, thus "fooling" the ECU into thinking it has less boost than actual.

I would not use one of these devices. Why hack one of the best motor controllers, when
it can be done safely with new software.

jj
 
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