FTS AFPR install, vac changed?

[90CherryTSI]

I have my FTS AFPR fully installed now but the vac has changed from 18 to 12. Fuel pressure is at 28 with the hose on, 36-38 w/o. When I put back on the stock FPR it's back to 18 and just holds there. This normal? Thanks!

 

[moliver]

vac is a little low i think.

 

[cfisher]

My vacuum drops to 12 when I have the vac line off the AFPR. Goes back to 18 once I hook it back up on my Aeromotive AFPR.

 

[90CherryTSI]

Anyone with a FTS have the problem? Does your pressure according to your gauge ever change like if you wack on it for a while and jump out to check it, should it immediatly be back to resting at 26-28 as in the line release the pressure immediatly? Or is it normal for it to float a little?