Recommend hardening turbochargers on Z-Series?
 

Hi everyone,

recently, I have read a few reviews on the turbochargers for the Z-series and I got mixed impressions and opinions. Some say they're worth their money while others claim that they will slow you down.

I am asking because I got a discount on a hardening paste and treatment and I would really like to try it out. Right now, turbochargers are the only things that come to mind when I was looking for objects to harden. They even state on their website that turbochargers are suitable for this treatment.

But the question I got is, are they worth it?