boost isue

hey, i have a problem i am having a problem boosting on the highway... my gauge is reading boost but it goes from 12 to 14 and flucuates... also it doesnt feel like the boost is kicking in can u help me?

is your car sputtering at all and have you checked to make sure the boost guage is hooked up right. Do you have a boost controller.

yes i do have a greddy ebc hooked up to the turbo housing, nd the wastegate... n yes i have my boost gauge hooked up to the fuel pressure regulator ( on vfaq.com that is the best place to hook it up the boost gauge )...

What?! Your boost gauge is on your FPR? Shouldnt that be cut into a vacumn line?

I just went to vfaq.com and here is what I found
 
Boost Tap
Boost Tap

• Where do I tap my boost gauge
  
  1. Look at hoses on the throttle body
     
  2. You should find 4 hoses attaching to ports labeled A2, A, E, and P
     
  3. 90s will have 2 on top and 2 on the front, later cars will have 3 or 4 on top
     
  4. Tap it from the "P" hose (usually RED striped)
  
  
  If your hoses do not have colored stripes, or your throttle body isn't marked, you can figure out which hose to tap into. Look at the throttle body, and note where the throttle plate pivots. This is your "centerline". The hose taps have obvious passages into the throttle body, and you should be able to figure out which ones tap in before and after the plate. You want to tap into the taps AFTER the plate, so you get full vac and boost readings. On most cars, these hoses are RED or GREEN.

sry i meant the fuel pressure selinoid... thats where i tapped in the line... after the fuel pressure selinoid