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| Forum name | Turbo/Nitrous Tech |
| Topic subject | HELP- S-FMU wont adj vac to set idel fp??? |
| Topic URL | http://forums.2gnt.com/dcboard.php?az=show_topic&forum=8&topic_id=72827 |
72827, HELP- S-FMU wont adj vac to set idel fp???
Posted by BOOSTIN-GS, Dec-31-69 06:00 PM
Here is my set up.I have accel 440's the S-FMU with 2.72 disk and ring / bleed valve and the dark spring. Static fp at 35psi and then when i try to lower the fp with the vac adj screw it dosent do aney thing? WTF???
And yes i have done the fpr mod on the 95 fuel rail. This dam car keeps killin o2 sensors becose i cant get the idel fp down and it runs like crap. Ok so am i just retatred or what's the deal is ths s-fmu i got crap or am i running the wrong set-up for 19lbs of boost.
can aney one can help please im gonna loose my mind tryin to finger this out.
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72857, RE: HELP- S-FMU wont adj vac to set idel fp???
Posted by RxR_Eclipse, Dec-31-69 06:00 PM
wierd. Mine is a 95 and just today I added my new injectors and hacked my pressure regulator, Mine goes below 20 psi. Would the disks/springs make a differance?
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72858, RE: HELP- S-FMU wont adj vac to set idel fp???
Posted by Star Turbo Talon, Dec-31-69 06:00 PM
Use the static screw on top to adjust your idle pressure. The vacuum screw is to set the point where the raising rate begines if i remember correctly.
Terry
96 Eagle talon ESI
Star Stage II - Boost/oil/EGT gauges
97 Eclipse
Greddy header/evo exhaust - Stage 2 6 puck Sprung hub MIBA clutch - Shortened shifter - Koni Yellows w/eibach prokit - Stillen Fr/Rr swaybars - ceramic intake - DEI Keyless entry alarm - Niche 17" Shoks
Waiting to be installed: Apexi AFC, HKS EVC IV, 450 Turbo injectors, SFMU/return line, GSX Front brakes (need rotors)
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72859, RE: HELP- S-FMU wont adj vac to set idel fp???
Posted by XtremeRS, Dec-31-69 06:00 PM
Yeah be sure you are turning out the top allen bolt on the SFMU. If I remember correctly, when i put in larger than stock injectors, I had to use the longer, silver spring inside the SFMU to get a lower idle fuel pressure..Also, leave your vac line connected to the SFMU when setting your idle fuel pressure. I know the directions say to disconnect it for setting the static pressure(0 psi), but it has always worked out fine by adjusting it to set idle fuel pressure, and the static pressure at 0 psi is always where it needs to be.
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72868, RE: HELP- S-FMU wont adj vac to set idel fp???
Posted by BOOSTIN-GS, Dec-31-69 06:00 PM
thans for the input but i blew the tranny into a thousand pices today when testing with the s-fmu. it ran good right up till the trans went so i wont be driveing it for awile. ;(
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72870, RE: HELP- S-FMU wont adj vac to set idel fp???
Posted by BlueMach5, Dec-31-69 06:00 PM
Since we are on the topic of SFMU, I have a question...
Today RxR_Eclipse and I pressure tested my system in preparation for boost, and I am getting a leak out of the little boost port...
should I block that or what...
and while we were at it, I took the opportunity to do the FPR mod.
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