Where to reference boost with rising rate fpr?

[FattyBoomBatty]

I'm going to be getting the aeromotive regulator probably, and I was wondering if I should connect the vacuum line before or after the throttle body? If it sees vacuum in the manifold vs. much less vacuum in the i/c piping will it get goofy? My old FPR was hooked up to the intake manifold after the TB and sometimes it would fluctuate the base level, I don't know if that was because of the regulator or the vac. source.

I just noticed someone else's fpr connected before the TB, and I remembered that a stock quest has it referencing before the TB.

Anyone know for sure?

[Shane@DBPerformance]

It should be hooked up to the intake manifold where it will see vacuum and boost. You have to unplug the vacuum line from the FPR to actually check/set your base fuel pressure. The fuel pressure is supposed to change with different amounts of vacuum. There isn't vacuum on the i/c pipe side of the throttle bodt, so you don't want to use that as a source.

[Shane@DBPerformance]

Why are you even changing FPRs?

[FattyBoomBatty]

New intake manifold, the other was a bolt on unit, and this is a sheet metal custom one with a different fuel rail. I need a remote one.

[niterydr]

It should be hooked up to the intake manifold where it will see vacuum and boost. You have to unplug the vacuum line from the FPR to actually check/set your base fuel pressure. The fuel pressure is supposed to change with different amounts of vacuum. There isn't vacuum on the i/c pipe side of the throttle bodt, so you don't want to use that as a source.
+1

[FattyBoomBatty]

Cool, well that's where ihad the old one hooked up, so I'm happy about that. :)