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FMU users beware!

Old 01-12-2004, 03:29 AM
0.5 BAR
Thread Starter
Join Date: May 2003
Posts: 127
Default FMU users beware!

Holy $hit!

I just installed new inline BOSCH pump in the engine bay area. After starting car noticed that there was almost vacuum creating inbetween intank and inline fuel pump -> so I had to remove intank one.
Geez... that intak pump is like 1/4 size of this inline!!!

If using FMU there's no friggin way that little pump can pump enough gas pressure for FMU!
Also, another thing I noticed - hose that is connected to fuel pump outlet out of reservoir - it connects so easy (hold by only a plastic clamp!) - I can't belive they used this kind of connectors for gas *under pressure*.

Please, if using FMU *replace* fuel pump, and put better hose for those 10" from fuel tank to metal hose that goes to engine bay.
Nick7 is offline  
Old 01-12-2004, 03:36 AM
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Join Date: Nov 2004
Posts: 5,102
Default Re:FMU users beware!

the walbro 255 is aobut the same size as the stock one. just becouse of its size means ----.
OnYx is offline  
Old 01-12-2004, 09:17 AM
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Join Date: May 2003
Posts: 267
Default Re:FMU users beware!

I've never used an FMU, but I was under the impression when using an FMU it was a golden rule to get an inline pump, because the stock nor the walbro 255lph can handle the high fuel pressure an FMU causes.
kyle h. is offline  
Old 01-12-2004, 12:06 PM
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Join Date: Jan 2003
Posts: 4,438
Default Re:FMU users beware!

fmu does not create pressure, it regulates it and raises the pressure to the injectors proportionate to boost. Everybody i talk to says its hard on fuel pumps
accordepicenter is offline  
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