Has any body fitted these lightened pulleys to crank/alternator, ect and dose it make a difference or is it just a con?

 

Never had them, so don't know. I think the theory is they should aid throttle response and torque by way of there being less mass to rotate. In reality, I suspect the differance is very little. Like I said, not sure though as I haven't tried them.


I suspect more bling bling than anything else.

 

Had some fitted yesterday, coincindentally.
Not driven the car too much yet, but it does appear to rev a little easier/smoother.
I was told that the difference will be more noticable with a lightened flywheel.