93FD3S

Need a little help here. I'm in the process of installing the Profec B Spec II in my FD. I'm running a single turbo set up with Aeromotive Fuel Pressure regulator, and HKS standard external wastegate. I believe the Com side of the stepping motor goes to the top of the wastegate, and the NC goes to the Compressor housing or pressure source. Can the NC side be hooked up any were else? Because I don't have a nipple on my turbo housing to hook up the NC hose to. Also I won't be using the NO side of the stepping motor correct? Now seeings how I'm running an after market fuel pressure regulator will I still hook up the vacuum line that runs from the back of the control box in side of the car to the engine bay to the Aeromotive FPR? I'm thinking yes but just wanna make sure. And If I do hook up the Aeromotive FPR I just T it in to the existing vacuum line correct? Right now I have the FPR vacuum source hooked up to one of the nipples on the upper intake manifold.
Now about the HKS wastegate. I know the top nipple connects to the Com on the Greddy boost controller. What about the side nipple? The darn instructions are in Japanese. Does it connect to a vacuum source after the throttle body? Thanks in advance for the help....!!!

nyt

iTrader: (1)

you wont be using the NO side, make sure the plug is out of it and its open. The NC worked fine on mine when it was hooked up to a vac/boost source.

You don't have to T into your fuel pressure regulator source, It's just a reliable source to tap.

The other side of the wastegate (side) should be hooked up to a boost source. It again can be boost/vacuum without any real issues.

I have the profec-b spec-II, the second half of the manual is actually in english. Try checking that. Also there are instructions on the greddy webpage. Read them, they explain everything. It's actually pretty important that you know how to work the set gain and the warning features. just fyi, my single turbo setup with hks wastegate works best with gain at 0 at 15psi, and gain at 15 at 18-20 psi.

A little info on my settings from memory. I'll note the numbers I'm not 100% on.

15 psi:

30% duty cycle *this might be 40, i dont remember
0% gain
120 set gain (12 psi, I'm not using the kpa format. The instructions tell you how to change it over. I think you hold mode down and hit select twice or somethingG)g.
170 warning
7% warning rollback

18-19psi:
50% duty cycle
15% gain
140 set gain
200 warning
10% rollback

oh and i have the 10psi spring in my wg.

93FD3S

nyt, thanks for the help. I'm just still a little worried about hooking up the wastegate side to just a vacuum source (after throttle body) and also not T the fuel pressure regulator vacuum line for the profec but rather to another vacuum source. Anymore input? Thanks...

93FD3S

Anyone else..?

93FD3S

Anyone else....come on...!!

nyt

iTrader: (1)

I've run vacuum/boost sources to a wastegate before without any problems. Also, my profec-b spec-II is on its own vacuum/boost source seperate from the FPR.