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Top 2GNT Technical Turbo/Nitrous Tech topic #91462
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Subject: "fuel gauge and more ?" Previous topic | Next topic
boosted60trimrstNov-17-05 11:12 AM
Member since Sep 10th 2005
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#91462, "fuel gauge and more ?"
Nov-17-05 11:39 AM by boosted60trimrst



          

i just hooked up my sfmu . big disk , dark spring , stock injectors running 5psi . well the b&m fuel pressure gauge i bought needle shakes like crazy at idle . if i rev the engine to about 3000rpm it will go solid and wont shake anymore . why is it doing that is it normal ? i tried to tune the sfmu and i only can change the pressure about 1 psi . thats pobably because i dont have the restrictor right ?i read that people just use welding tips . but what size ?
also does anyone have a pic of the screws on the side cuz i might be missing the boost screw . sorry for another sfmu post but i really need the help .

btw there are no leaks and no kinks in the hoses .

LED tails : Done for now!
99 eclipse rst
cobalt blue met. paint,star stage 2 upgraded t3/t460trim turbo ceramic coated , polished compressor housing, ,optima yellow top, chrome i/c piping ,front mount ntercooler ,apexi turbo timer . zeitronix wb02 ,faze oil ,boost gauge,egt ,bosch 4x plugs,kyb agx struts, pro kit springs.17''adr venomous rims,Falken azenis ,brembo dilled/slotted rotors ,turbo xs bov ,oil catch can,manual shiftknob,autometer pyrometer egt , vortech sfmu,b&m fuel pressure gauge ,accel 310cc injectors ,gasketmatched and polished intake manifold ,58mm throttle body ,no egr,polished turbonetics wastegate,fuel pump rewire,homade fcd and a lot more .LED reverse lights ,sidemarkers and tails .atx to mtx swap . South bend tz clutch . Tons more
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Replies to this topic
RE: fuel gauge and more ?, Aggression, Nov-17-05 12:21 PM, #1
RE: fuel gauge and more ?, boosted60trimrst, Nov-17-05 04:18 PM, #2
RE: fuel gauge and more ?, jsupetran, Nov-17-05 04:22 PM, #3
      RE: fuel gauge and more ?, Moderatorcs82685, Nov-17-05 06:24 PM, #4
           RE: fuel gauge and more ?, boosted60trimrst, Nov-17-05 07:19 PM, #5
                RE: fuel gauge and more ?, boosted60trimrst, Nov-18-05 11:09 AM, #6
                     RE: fuel gauge and more ?, boosted60trimrst, Nov-19-05 08:47 AM, #7

AggressionNov-17-05 12:21 PM
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#91463, "RE: fuel gauge and more ?"
In response to Reply # 0




          

Yes the needle on the B&M fp gauge shaking at idle is perfectly normal. I have the same setup you do and mine does the same thing. The only part of the SFMU that needs a screw is for the bleeder port. I would just order a bleeder valve for it and call it a day. I think you can get them for like $35 or something like that. I think Vortech wants $60 or $80 from their main site.

--------------------


- 05 Subaru STi
- 97 eclipse gs (289whp w/ 276tq)

  

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boosted60trimrstNov-17-05 04:18 PM
Member since Sep 10th 2005
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#91467, "RE: fuel gauge and more ?"
In response to Reply # 0




          

thanx a lot . happy to know my gauge isnt broken . but it moves so fast it hurts my eyes lol . also i know i should be running about 48psi at idle. right now its about 54 psi . thats the lowest i can get it without the restrictor . but my static is about 55 .(wont change at all) . i know thats wrong . what should the static fp be?
right now at idle my o2 voltage is cycling from about .18 to .94 . what should it be ?

LED tails : Done for now!
99 eclipse rst
cobalt blue met. paint,star stage 2 upgraded t3/t460trim turbo ceramic coated , polished compressor housing, ,optima yellow top, chrome i/c piping ,front mount ntercooler ,apexi turbo timer . zeitronix wb02 ,faze oil ,boost gauge,egt ,bosch 4x plugs,kyb agx struts, pro kit springs.17''adr venomous rims,Falken azenis ,brembo dilled/slotted rotors ,turbo xs bov ,oil catch can,manual shiftknob,autometer pyrometer egt , vortech sfmu,b&m fuel pressure gauge ,accel 310cc injectors ,gasketmatched and polished intake manifold ,58mm throttle body ,no egr,polished turbonetics wastegate,fuel pump rewire,homade fcd and a lot more .LED reverse lights ,sidemarkers and tails .atx to mtx swap . South bend tz clutch . Tons more
http://imageshack.us>


http://www.2gnt.com/index.php?d=boosted60trimrst
My contribution to the wiki
http://www.2gnt.com/index.php?d=crank%20arm%20spindle%20mod%20to%20fit%20power%20panels

  

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jsupetranNov-17-05 04:22 PM
Member since May 04th 2002
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#91468, "RE: fuel gauge and more ?"
In response to Reply # 2




          

Originally posted by boosted60trimrst
thanx a lot . happy to know my gauge isnt broken . but it moves so fast it hurts my eyes lol . also i know i should be running about 48psi at idle. right now its about 54 psi . thats the lowest i can get it without the restrictor . but my static is about 55 .(wont change at all) . i know thats wrong . what should the static fp be? right now at idle my o2 voltage is cycling from about .18 to .94 . what should it be ?


There is no exact o2 voltage at idle. As long as it cycles back and forth, then it is fine.

New Car:
2004 350z base, Nismo CAI, pioneer avic-n1 (dvd, cd, navi)



Old Car:
1998 GS with hrc stage 2, HID 6000k conversion kit, AEM UEGO wideband, sfmu, ml, prokits, Greddy warning gauges: egt, boost gauge, and oil pressure, apexi tt, haydans tranny cooler, costum dp, groundwires, dynotune fp gauge. gst muff, turbo spoiler
Boostin since Aug 03.

nothing like driving with the windows down and the music low: i love hearing the turbo spool, swwwhhhttt!!!!


  

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Moderatorcs82685Nov-17-05 06:24 PM
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#91469, "RE: fuel gauge and more ?"
In response to Reply # 3




          

your probably not missing a screw, its probably the one that is really small and has i believe a hex head. Your idle fp is fine hahn recommends between 47 and 55 psi, if i was you i would err on the high side until you can get it tuned, i've got mine set at 55. I would also suspect your static fp to increase more than 1psi over idle fp. I'm assuming you have an upgraded fuel pump, if not maybe that's your problem. You can check to see if fp is rising as it should with just a small air compressor.


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EVO IX - just a really expensive boost gauge and a K&N air filter
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boosted60trimrstNov-17-05 07:19 PM
Member since Sep 10th 2005
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#91470, "RE: fuel gauge and more ?"
In response to Reply # 4




          

Originally posted by cs82685
your probably not missing a screw, its probably the one that is really small and has i believe a hex head. Your idle fp is fine hahn recommends between 47 and 55 psi, if i was you i would err on the high side until you can get it tuned, i've got mine set at 55. I would also suspect your static fp to increase more than 1psi over idle fp. I'm assuming you have an upgraded fuel pump, if not maybe that's your problem. You can check to see if fp is rising as it should with just a small air compressor.


i have a walbro 255lph . ill check to see if it rises with the compressor tomm. the other question i wanted to know what size welding tip can i use for the restrictor ?

LED tails : Done for now!
99 eclipse rst
cobalt blue met. paint,star stage 2 upgraded t3/t460trim turbo ceramic coated , polished compressor housing, ,optima yellow top, chrome i/c piping ,front mount ntercooler ,apexi turbo timer . zeitronix wb02 ,faze oil ,boost gauge,egt ,bosch 4x plugs,kyb agx struts, pro kit springs.17''adr venomous rims,Falken azenis ,brembo dilled/slotted rotors ,turbo xs bov ,oil catch can,manual shiftknob,autometer pyrometer egt , vortech sfmu,b&m fuel pressure gauge ,accel 310cc injectors ,gasketmatched and polished intake manifold ,58mm throttle body ,no egr,polished turbonetics wastegate,fuel pump rewire,homade fcd and a lot more .LED reverse lights ,sidemarkers and tails .atx to mtx swap . South bend tz clutch . Tons more
http://imageshack.us>


http://www.2gnt.com/index.php?d=boosted60trimrst
My contribution to the wiki
http://www.2gnt.com/index.php?d=crank%20arm%20spindle%20mod%20to%20fit%20power%20panels

  

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boosted60trimrstNov-18-05 11:09 AM
Member since Sep 10th 2005
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#91487, "RE: fuel gauge and more ?"
In response to Reply # 5




          

ok i start is up today ..take off the vac line . i tried to set the static and it barely moved . it is at 60psi . then i put back the vac line with a .032 welding tip for the restrictor . now my idle psi is at 60 also and i cant change it . i drove the car anyway and it runs pretty smooth so fp is rising but how come i cant lower it at static and idle ?

LED tails : Done for now!
99 eclipse rst
cobalt blue met. paint,star stage 2 upgraded t3/t460trim turbo ceramic coated , polished compressor housing, ,optima yellow top, chrome i/c piping ,front mount ntercooler ,apexi turbo timer . zeitronix wb02 ,faze oil ,boost gauge,egt ,bosch 4x plugs,kyb agx struts, pro kit springs.17''adr venomous rims,Falken azenis ,brembo dilled/slotted rotors ,turbo xs bov ,oil catch can,manual shiftknob,autometer pyrometer egt , vortech sfmu,b&m fuel pressure gauge ,accel 310cc injectors ,gasketmatched and polished intake manifold ,58mm throttle body ,no egr,polished turbonetics wastegate,fuel pump rewire,homade fcd and a lot more .LED reverse lights ,sidemarkers and tails .atx to mtx swap . South bend tz clutch . Tons more
http://imageshack.us>


http://www.2gnt.com/index.php?d=boosted60trimrst
My contribution to the wiki
http://www.2gnt.com/index.php?d=crank%20arm%20spindle%20mod%20to%20fit%20power%20panels

  

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boosted60trimrstNov-19-05 08:47 AM
Member since Sep 10th 2005
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#91509, "RE: fuel gauge and more ?"
In response to Reply # 6




          

anyone ?

LED tails : Done for now!
99 eclipse rst
cobalt blue met. paint,star stage 2 upgraded t3/t460trim turbo ceramic coated , polished compressor housing, ,optima yellow top, chrome i/c piping ,front mount ntercooler ,apexi turbo timer . zeitronix wb02 ,faze oil ,boost gauge,egt ,bosch 4x plugs,kyb agx struts, pro kit springs.17''adr venomous rims,Falken azenis ,brembo dilled/slotted rotors ,turbo xs bov ,oil catch can,manual shiftknob,autometer pyrometer egt , vortech sfmu,b&m fuel pressure gauge ,accel 310cc injectors ,gasketmatched and polished intake manifold ,58mm throttle body ,no egr,polished turbonetics wastegate,fuel pump rewire,homade fcd and a lot more .LED reverse lights ,sidemarkers and tails .atx to mtx swap . South bend tz clutch . Tons more
http://imageshack.us>


http://www.2gnt.com/index.php?d=boosted60trimrst
My contribution to the wiki
http://www.2gnt.com/index.php?d=crank%20arm%20spindle%20mod%20to%20fit%20power%20panels

  

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