Does anyone know where I can find an rpm vs torque curve for
the Countryman s engine[turbo]? And also when does peak torque
occur on the tach?

 

THIS POST has a PDF of the before and after torque/hp numbers for a highly tuned N18. Look at the torque curve for the before (blue) trace. Looks like a relatively flat torque curve between 2800 and 4600 rpm. Peak seems to be at about the 4200 to 4600 range.

 

thanks very much