How long should I wait to check my plugs after afpr install?

[Megags]

I was burning leaner than I'd like to have so I got a b&m afpr. I have the pressure set to just under 60psi. Seems to be a bit much... I just don't want my engine blowing up. So how long should I wait to check to see if my plugs changed colors? a week? 100 miles? or should I have gotten new plugs? I'm running the NGK brp7ey's.

 

[allwheelTSI]

you don't need to be running resistor type plugs in a NT unless its high compression.. its hard to read new plugs,i'd say a couple hundred miles..
you should have that fuel pressure down around 35-40.