One word of caution.
I used Witchhunter cuz the guy is a couple miles from my home.
Nice guy not an elaborate operation but seems effective.
With the refurb (he is cautious to make clear you cant "rebuild" these injectors)
You get a print out w/before and after flow performance and maps.
What you may miss (i did
) is the disclaimer on the bottom that if you dont
install & use the injectors in the first 30 days ...they may
stick and his warrenty is void.
Sure enough, it was more like 60 days before I could apply a set of 1.7 injectors
to my 1911 build and encountered drivability issues that were traced to 2 out of the quad not firing and a third only sporadicly firing.
These had been kept in the ziplocked baggy I recived them back in since the refurb