Hi,

I just purchase a HKS FCD and in the installation they aren’t telling how to set it up. All they say is set it approximately run the car and if it runs roughly turn it off and reset it... I can set it from 1 to 12 (normal to cut).


I want to run at 10 lbs of boost. I have Greddy Profec B Spec 2, Apexi SAFC-II, secondary injectors 720cc, walbro 255 fuel pump, A/F wideband AEM, boost gauge AEM, Koyo rad, Greddy blow off valve type RS, Greddy FMIC 24R.

At which number do you guys set it at? Or do I really have to do trial and error...


Chris.

 

I've never used an adjustable FCD, but you could bench test it to whatever pressure you want it. Put the key in the ON position, engine off.

Get a hand vacuum/pressure pump (mityvac) and apply pressure to the nipple on the stock pressure sensor. As the boost increases, measure the voltage coming out of the pressure sensor (wire color depends on year) and then try measuring it at the FCD .

Pump the sensor up and see at what pressure the FCD is clamping the voltage or however this thing works. Adjust the FCD and see how it changes output voltage vs pressure. I know that's kind of vague but if you're handy with a multimeter you should be able to figure out how to set it without even running the car.

EDIT: http://www.hksusa.com/products/more.asp?id=683 lists FC3S application as "setting 7"

 

Thanks arghx,

I will check this out has soon as I get home.

Chris.

 

The instructions I found for the FC3S had you set it to 2. I wanted the FCD to interfere with the signal as little as possible.

So I did the trial and error and came up with a setting of 7 for 10 psi.

HTH

 

Thanks a lot 2 3D SC!

I really appreciate your help!

I will set it that way then.

Chris.