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need opinions on fmu

Old 05-19-2004, 06:03 PM
  #1  
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Default need opinions on fmu

what can people tell me about vortech fuel man. units?
are they any good? i read on there site that it can be added to your car and your stock ecu doesnt need to b modified. is this trew and would this b the best for my junkyard setup
all advise welcome
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Old 05-19-2004, 06:06 PM
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Default Re:need opinions on fmu

i would rather have a hand pump and manually pump more gas into my engine according to my boost gauge :P...no not really, but the FMU's in general just suck ***. For the price you're gonna pay for an FMU, you might as well just chip your ECU
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Old 05-19-2004, 06:44 PM
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Default Re:need opinions on fmu

I'll sell you one cheap that I have but I'm not saying it's the best way to fuel management.
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Old 05-22-2004, 11:06 AM
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Default Re:need opinions on fmu

if i got a universal fmu that had a set comp ratio and my car is 9.2:1 would i get a 8:1 or 10:1?

another thing if i use an fmu should i upgrade injectors too or will stock ones work
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Old 05-22-2004, 11:15 AM
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Default Re:need opinions on fmu

LMAO, it has nothing to do with your compression ratio. Most people use a 12:1 FMu which means it raises the fuel pressure 12psi for every 1psi of boost. This forces more fuel past the injectors since the fuel pressure is 100+psi above what it should be. You will still need check valves or a missing link with the FMU. If you only want to run like 6psi or less it might not be that bad of an idea.
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Old 05-22-2004, 11:37 AM
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Default Re:need opinions on fmu

Is 6psi even considered "running boost"?
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Old 05-22-2004, 11:41 AM
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Default Re:need opinions on fmu

Probably not considering with a free flowing header and a cold air intake it would make about the same power.....unless you drive a Cavalier where you can make 50whp and 75ft.lbs at only 3psi.

You would get the cool bov noise though.
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Old 05-22-2004, 11:46 AM
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Default Re:need opinions on fmu

Hehe.. My 1g DSM BOV at 10psi sounded like a dying cow..

I could only imagine what it would sound like at 6.
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Old 05-23-2004, 03:35 PM
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Default Re:need opinions on fmu

mine sounds like somebody clubbing a baby seal at 6 psi... but I'm poor so that's what I'm running.

btw I got a fmu fs in the classifieds.
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