Technical Why is the auto detuned?

[cubic25]

Hey all,


I was just wondering if anyone here knows why the dualogic version is detuned? The same engine with a manual gearbox makes 77Kw and 290Nm. In the Automatic, it makes 66Kw and 200Nm.

If it is for gearbox longevity, does anyone know how many Nm the dualogic is good for?

Thanks in advance.

 

[portland_bill]

Autos throughout the years have often had slightly less power than their manual brethren. This makes it easier for the manufacturer to provide smooth changes. Autoboxes can handle the power, but the smoothness of the change is important for those that choose autos, and a dualogic, being an automated manual will be mnore susceptible to rough changes.

 

[cubic25]

Thanks for the reply.
So does anyone know how much power they can safely handle or what would need to be upgraded for it to handle more power reliably?

 

[portland_bill]

If the vehicle manufacture has produced a lower tuned engine for the auto, they have decided that is necessary for best operation and reliability.

The dualogic gearbox is effectively the same unit as a manual with the control servos and pump added onto the outside. So theoretically it should be able to handle the same power as a manual. But the dualogic system may not work as well and that may become expensive and difficult to repair or maintain.

The manufacturer has spent a lot of time and money researching the best compromise. The entire might of the forum is unlikely to find a better all-round solution. Beware, modifications bring risk, mostly to your wallet.