HPOP testing

[Copracr]

I have two HPOP's and I was wondering if anyone offered a service to see which one is healthier? I have my 200k mile 15 degree and a unknown high mileage 17 degree.

 

[KBMKVIII]

Stealth checked my dual 17* setup that I bought used.
Even re o-ringed everything and put fresh paint on them.