Please Excuse my ignorance? I've a 2005 a3 2.0tdi bkd engine. My gearbox was given trouble so I sourced a second-hand gearbox from a 170bhp golf gearbox code jma. I think I noticed slighter difference in torque now when I'm driving. It feels as if the car is slightly quicker, would this make sense from the more powerful(possibly different gear ratio) gearbox or is this in my head? Many thanks guys.