Reliability of FMU?

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Old Apr 27, 2004 | 12:25 PM
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Default Reliability of FMU?

How reliable should it be using a Vortech FMU with an MSD Boost Timing Master on a daily driven stock engine B18C at 7-8psi?
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Old Apr 27, 2004 | 12:28 PM
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Default Re: Reliability of FMU? (Alberto)

not the best... but better than nothing at all.
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Old Apr 27, 2004 | 12:29 PM
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Default Re: Reliability of FMU? (Alberto)

How much does all that cost?
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Old Apr 27, 2004 | 12:30 PM
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Default Re: Reliability of FMU? (Silverbeast)

around $300. Was thinking about Hondata but how much for tuning?
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Old Apr 27, 2004 | 12:32 PM
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Default Re: Reliability of FMU? (Alberto)

for that money you should think about socketing the ecu and burning your own roms using uberdata/ crome/ etc.
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Old Apr 27, 2004 | 12:36 PM
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Default Re: Reliability of FMU? (Alberto)

Tuning is not going to fix the fueling problem. You need to get a 1:1 FPR and be done with it. I reccomend the Aeromotive FPR, works great.

As far as the engine mgmt, it really doesnt matter which one you decide on (did i just say that?), just get something.

I prefer to use the Hondata for obvious reasons, however any mgmt is better than none, no matter what i think of it
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Old Apr 27, 2004 | 12:40 PM
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Default Re: Reliability of FMU? (Silverbeast)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Silverbeast &raquo;</TD></TR><TR><TD CLASS="quote">Tuning is not going to fix the fueling problem. You need to get a 1:1 FPR and be done with it. I reccomend the Aeromotive FPR, works great.

As far as the engine mgmt, it really doesnt matter which one you decide on (did i just say that?), just get something.

I prefer to use the Hondata for obvious reasons, however any mgmt is better than none, no matter what i think of it </TD></TR></TABLE>

FPR, FMU and Boost Timing and i should be safe?
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Old Apr 27, 2004 | 12:42 PM
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Default

You dont need the FMU with the FPR. It does the rising rate 1:1
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Old Apr 27, 2004 | 12:53 PM
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Default Re: (Silverbeast)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Silverbeast &raquo;</TD></TR><TR><TD CLASS="quote">You dont need the FMU with the FPR. It does the rising rate 1:1</TD></TR></TABLE>

So, the FPR is recommended over a FMU? Also, how much should I retard the timing on the setup above?
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Old Apr 27, 2004 | 12:54 PM
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Default Re: (Silverbeast)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Silverbeast &raquo;</TD></TR><TR><TD CLASS="quote">You dont need the FMU with the FPR. It does the rising rate 1:1</TD></TR></TABLE>

yeah but if he DOES NOT go hondata/uberdata/whateverdata.....

he cant just run an FPR w/ 1:1 ratio....he needs the fmu with something like 12:1 ratio....

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Old Apr 27, 2004 | 12:55 PM
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Default Re: (pornstarSR)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by pornstarSR &raquo;</TD></TR><TR><TD CLASS="quote">

yeah but if he DOES NOT go hondata/uberdata/whateverdata.....

he cant just run an FPR w/ 1:1 ratio....he needs the fmu with something like 12:1 ratio....

</TD></TR></TABLE>

Exactly what I thought.
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Old Apr 30, 2004 | 12:01 PM
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Default Re: Reliability of FMU? (Alberto)

From what I get on reading on this site is that an FMU is not the best way to go. But for a 3rd gen lude with a B20A with an obd0 ecu I don't have many options. I plan on using an FMU 12:1 with a Walbro in-line pump. I think that will be ok for a T25 set stock 7psi. I have been reading and read that nice install write up on here and I didn't see something I need to know. With th ein-line pump do I leave the stock fuel pump in and hooked up or do I take it out or what? Thanx for the help.
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Old Apr 30, 2004 | 12:11 PM
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Default Re: Reliability of FMU? (slipslap)

Also, is one FMU better then the other? Cartech Vortech Paxton?
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Old Apr 30, 2004 | 12:16 PM
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Default Re: Reliability of FMU? (slipslap)

Why not just do an afc hack..
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Old Apr 30, 2004 | 12:22 PM
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Default Re: Reliability of FMU? (tgreaves)

Cause I can buy an FMU for $50 and a pump for another $50. An SAFC will cost me $200 and then I would probably need DSM injectors as well. I know people say don't be cheap, but I want it simple as well. Down the road when it's time to rebuild, it will be time to upgrade and get ready for higher boost. Let me ask you this. Can you use the older SAFCs or does it havwe to be the SAFC II?
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Old Apr 30, 2004 | 12:25 PM
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Default Re: Reliability of FMU? (Alberto)

with typical fmu setup you woudl get fmu and inline pump. what you should worry about is: 1. high fuel presure 2. high injector duty cycle.

its much safer to get fuel managment that controls larger injectors so you don't run high fuel pressure/duty cycle. you could still use f.p.r. and need to get high presure intank fuel pump. with good standalone and good tuning your car could run like factory turbo car.
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Old Apr 30, 2004 | 12:27 PM
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Default Re: Reliability of FMU? (vtec.dc2)

So would an SAFC with upgraded pump would be better? Could I run the stock T25 with an SAFC on my stock injectors? Or would I need bigger injectors for that?
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Old Apr 30, 2004 | 12:39 PM
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Default Re: Reliability of FMU? (slipslap)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by slipslap &raquo;</TD></TR><TR><TD CLASS="quote">So would an SAFC with upgraded pump would be better? Could I run the stock T25 with an SAFC on my stock injectors? Or would I need bigger injectors for that?</TD></TR></TABLE>

Search up on the afc hack.. In order to make it work you would need bigger injectors.. You wouldnt need an upgraded fuel pump with the afc hack..
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Old Apr 30, 2004 | 12:54 PM
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Default Re: Reliability of FMU? (tgreaves)

Well that sounds better. Less work to install. Man I get so many different answers. Got to try and figure out which ones are actually good info. Thanx for the help. maybe I should start a thread.
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Old Apr 30, 2004 | 01:01 PM
  #20  
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Default Re: Reliability of FMU? (slipslap)

Well just ask around more.. You will see that the afc hack is alot better for tuning boost than the fmu..
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Old Apr 30, 2004 | 03:47 PM
  #21  
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Default Re: Reliability of FMU? (tgreaves)

So I guess i should go with the AFC hack then. Why do they call it a hack? And do I need the V II one with the digital display? I am thinking the **** one doesn't allow enough adjustability. But i can use my stock fuel pump and FPR. I like that. I will get a fuel pump though seeing how mines old. Maybe I should start a thread. But I hate being told I'm a noob and search.
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