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Top 2GNT Technical Turbo/Nitrous Tech topic #34324
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Subject: "Pulsating Vortech FMU" Previous topic | Next topic
SemperboostNov-13-02 09:48 AM
Old School 2GNTer
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#34324, "Pulsating Vortech FMU"


          

My FMU pulsates like it has air in it? Esp when I;m at idle I can hear little spurts and feel it when I hold the FMU..anyone else have this problem? I'm thinking of switching to a smaller fuel line so I won't hafta clamp the line so much. I don't see any kinks or leaks at this time. Any help is appreciated.


Alvin

96 RST

Star Stage I turbo kit /Starion I/C w/ 2" chrome piping / GReddy Type-S BOV / Missing Link / Custom APEXi- GReddy 2.5" exhaust / 55mm ARD TB/ Nology wires / APEXi EL mech boost gauge / Autometer A/F gauge / Southland Dual Friction clutch / B&M short shifter / Energy Suspension shifter bushings / 16" GSX Rims / Front/ Rear camberkits / Eibach Prokits / Tokico Blues/ Front Upper, Rear Lower strut bars / Rear GST sway bar/ GSX Dual Piston Calipers, X-drilled/ slotted rotors


Alvin

http://www.cardomain.com/id/96rst

  

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HiOnPSINov-13-02 12:59 PM
Member since Mar 28th 2002
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#34325, "RE: Pulsating Vortech FMU"
In response to Reply # 0




          

Umm...injector pulse?



Jon

1997 Eclipse RS

14.21@101mph 10/4/02

MODS: 8.8:1 JE Pistons / Eagle rods / Stage 1 Hahn turbocharger / Melling Oil Pump / Autometer 5" tach / 4 JL 12" W0 subwoofers / Clarion 230w amp / short shifter mod / GReddy EVO exhaust / custom 2 1/2" downpipe / no cat con / CM Stage 1 / 30lb Mustang injectors / TurboXS MBC / 1G SMIC / Eibach Sportline springs / KYB GR-2 struts / GReddy 52mm EGT / A'PEXi Super AFC

Jon

1997 Eclipse RS | 2001 Lexus IS300
12.671 @ 111.660 1.586 60' 5/28/04

www.haiokuracing.com

  

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SemperboostNov-13-02 02:34 PM
Old School 2GNTer
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#34326, "RE: Pulsating Vortech FMU"
In response to Reply # 1


          

It's not injector pulse that would be way too fast. It feels like something is kinked or like air is in the system.

Alvin

96 RST

Star Stage I turbo kit /Starion I/C w/ 2" chrome piping / GReddy Type-S BOV / Missing Link / Custom APEXi- GReddy 2.5" exhaust / 55mm ARD TB/ Nology wires / APEXi EL mech boost gauge / Autometer A/F gauge / Southland Dual Friction clutch / B&M short shifter / Energy Suspension shifter bushings / 16" GSX Rims / Front/ Rear camberkits / Eibach Prokits / Tokico Blues/ Front Upper, Rear Lower strut bars / Rear GST sway bar/ GSX Dual Piston Calipers, X-drilled/ slotted rotors


Alvin

http://www.cardomain.com/id/96rst

  

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TeamDeanoDNov-13-02 10:52 PM
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#34327, "RE: Pulsating Vortech FMU"
In response to Reply # 2


          

Mine makes a funky noise while the car is idling also. It has done it since the kit was first put on.....no big deal.

I did not grab mine though, I am going off of the chhhhh chhhhh chhhh sound when the car idles.

If fuel pressure builds in boost and you get the proper egt when you boost, then I would not worry about it.


97 RS(PTE SC-61, Built Long Block, Electromotive Tec 3)It's Here!

  

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SemperboostNov-14-02 01:08 AM
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#34328, "RE: UPDATE"
In response to Reply # 3


          

I checked to see what line it was comming from and the pulsing and spurting is comming from the top line off the FMU. I think that goes to the fuel rail. I'm gonna try to take off the FMU and run it w/o it. Will it run stock FP even if I have a Hi-flo pump? What is the path of fuel from pump to injectors? thanks
Alvin

96 RST

Star Stage I turbo kit /Starion I/C w/ 2" chrome piping / GReddy Type-S BOV / Missing Link / Custom APEXi- GReddy 2.5" exhaust / 55mm ARD TB/ Nology wires / APEXi EL mech boost gauge / Autometer A/F gauge / Southland Dual Friction clutch / B&M short shifter / Energy Suspension shifter bushings / 16" GSX Rims / Front/ Rear camberkits / Eibach Prokits / Tokico Blues/ Front Upper, Rear Lower strut bars / Rear GST sway bar/ GSX Dual Piston Calipers, X-drilled/ slotted rotors


Alvin

http://www.cardomain.com/id/96rst

  

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KirbyNov-14-02 04:23 AM
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#34329, "RE: UPDATE"
In response to Reply # 4




          

I don't know how yours is mounted but the top line on mine is the vac line wich should pluse I would guess.



I edited to the wiki!

Originally posted by DR1665
NOTE TO SELF: Go commando to wedding. Scar the Irishman for life.

  

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