I have the s-fmu.
i just got around to hooking it up.
i got it used.
1st. it came with 3 disk a big one, a size smaller,and then an ever smaller disk...

can some one tell me what the ratio's are for these disk??

I have the largest one in now with the longest spring.
the presure does not seem to move a whole lot up or down.? with or with out vacuum.??
unless i bottom the screw out.OOOPs..! i should not have done that.
also,,,,the pressure does not seem to go up when i hold the throttle open some.?

right now I am just running hrc stage 2 till my engine gets broke in.

also the inline vacuum valve
how does it go in?,,,one side of the port looks aliitle bigger the the other!..?

one more thing.
there are 3 ports on the side..one says boost it has a allen screw init.
the other says bleed it has a flat head screw in it.
then there is one that say vacuum it has a allen head screw in it think,,
I need to get this thing up and running today.!
so can anyone please lend some imfo??!!
thanks.

oh yeah i also got a cel of 12 and 23?????

ok the disk i am using seems fine hanet check it under full boost yet,
that will hafta wait 500 miles or so,

well what injectors are you using right now? also it depends what is your max psi.. if its stock injectors and you max psi is 9psi i would use the dark colored spring, and the biggest disk 3.62= about 6:1 or the next smallest which should be about 5.4:1 also use the ring with the 5.4:1... also there is another smaller ring and disk should be about 2:1 or 3:1 gain about... if u got stock injectors and ur max boost is 6psi use the 5.4:1 disk and ring set it to 47-55psi at idle u should be good for now... also the vacuum valve just cut the hose 2-3in from the s-fmu and put it between... the boost port should be closed if i remember correct, and the idle screw really does not do anything for us... the other is closed which is meant for a bleed scew if u got one or buy one...




Michael 99gs
HRC Stage 2
http://www.dreamwater.net/purplebeast

so....is a bleed screw pictured here or is this what it looks like capped?

Hey, check out my site: www.asog.net/phantom

go to tech section, i have the full SFMU instructions there, itll answer all your questions ;)

thanks