1998 GSX, 1G Head, 1G Intake Manifold, 2G Exhaust Manifold, TIAL 40mm Wastegate, GReddy Type S BOV, Greddy FMIC & Piping, No name Manual Boost Controller.
:headache:
I think thats everything important. I need to know where the vacuum lines go from the BOV, Wastegate, and Bost Controller. I will post pics in a minute. There are 2 vacuum lines from each. I will explain more with the pics.

The boost controller goes to one of the ones on the wastegate.

heres the boost controller. Now, the red tip is supposed to go to the wastegate, I just dont know which part of the wastegate.

Heres the BOV

The MBC goes to the lower WG fitting, the upper fitting (on the cap) stays open.

The upper fitting on the BOV goes to any preasure source, something off the intake manifold would be best. The lower fitting stays open.

Thank you I would have had the upper wastegate fitiing hooke up. Any clue on the other boost controller source?

Use the intake manifold nipple by the fuel rail... :uh:

:bounce: Thanks to both of you.

You can also tap the boost controller into the line that runs to your BOV. The best place for the MBC would be a preasure fitting on your turbo's compressor housing or outlet elbow if it has either of those. The shorter you keep the MBC lines the better; it will help eliminate boost spike.

Wouldn't it be better to pull it from the port labeled "P" on the throttle body or at the BOV? Because if you have a bigger intercooler it would take longer for the IC to fill up and you would actually be running lower than expected boost for that time. Or is that amount of time neglegible? Pressure response from a reference on the compressor housing would be accurate only of pressure there, where a reference from somewhere close to the throttle plate would be accurate for the entire piping route including IC.

Just a thought.

Right now i am shooting for running, then I am going to try and remove and shorten any thing possible. Thanks for the ideas tho!