TURBO DC2

This is a thread for the people using FMU's in their setups. How does it run? The capabilities of it are <8 lbs of boost, so I'm guessing you're not boosting over that. What hp on the dyno? and ET's did you get with your setup?

My setup: 94 GSR, T3/T4e, Drag Manifold, 8" IC, 8lbs boost

I am fully aware of "real" fuel management and I will be using uberdata after I get my wideband (still saving up). However I will be using a Vortech FMU with an inline pump temporarily until I get my uberdata setup together.

Let's not make this thread to bash FMU's since we all know they work within their limits

lalspeed

i have no first hand experience with them, but from what i have read on this site

cars run rich with them, which is good to an extent, and they also put down fairly good power for what they are

as long as you stay within the 8psi and under boost range, you should be fine

hope this helps and good luck with it

rmcdaniels

I used to use one for 6-7 PSI. It worked great until I turned the boost up to 10-11 PSI, then major internal engine carnage ensued. Just resist the overwhelming urge to turn up the boost and they work great for the price.

Rod.

I had a bone stock ls w/ drag kit, some rc injectors and fmu running 8lbs. I dyno 215, no ets, this car was beating on this car everytime I got in it.

sadangryboi

used 12:1 running a ls at 9psi
swapped turbo kit to gsr and ran it at 9psi

NO PROBLEMS

fuel now is changed...it ate alot of gas on fmu

redlseg

this is a stupid question what does a fmu look like? is it sort of like a fuel regulator?

98_civic_dude

despite what many people think of an FMU, they do the job right as long as you keep it within a certain perimeter. its not good for high boost, but for many people starting out on a kit, it'll work right for around 5-7 psi. of course, the best is to get it tuned with a better management. im currently running a fmu right now with hopes of upgrading to uberdata or neptune when i have more money. for the moment, everything runs fine.the biggest change ive notice is that my car eats way more gas.

98_civic_dude

http://cgi.ebay.com/ebaymotors...33742

TURBO DC2

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 98_civic_dude &raquo;</TD></TR><TR><TD CLASS="quote">despite what many people think of an FMU, they do the job right as long as you keep it within a certain perimeter. its not good for high boost, but for many people starting out on a kit, it'll work right for around 5-7 psi. of course, the best is to get it tuned with a better management. im currently running a fmu right now with hopes of upgrading to uberdata or neptune when i have more money. for the moment, everything runs fine.the biggest change ive notice is that my car eats way more gas. </TD></TR></TABLE>

Eats more gas when not in boost? Or do you mean while its in boost. Since the FMU starts to increase fuel pressure when it senses manifold pressure increasing, I'd figure that the motor would eat more gas when its in boost. But then again it would do the same on a car tuned with uberdata/crome/etc, ?

any others?

sadangryboi

it eats alot whenever u get on it and its in boost....u can literrally just watch ur gas drop...but eventually itll come back some...

skr TURBO ej

I ran a 12.1 fmu @ 10psi with obd2 prelude injectors and an intank pump, worked good untill i put bigger injectors in.. b16 heavy *** ej1 went 12.50's @ 115, never seen a dyno.

sadangryboi

nice time!

i personally have not seen any1 go wrong with a fmu at 10psi or under. and this is with big t3/t4 stage 3 .63 a/r turbos(what i used)

but i have not been on HT that long so some guys might have had 1 bad experience that brain washed everyone away from fmus

TURBO DC2

well it looks like as long as you are within its limits (&lt;8psi) with an inline pump it looks to work well. however when u increase the boost, its probably time to look into standalone fuel management.

376R

people using fmu's ,,, STOP !!! get a real fuel management. do it right the first time. here i have a hondata stage2 w/boost. with some goodies. hit me up if ur intersted.
https://honda-tech.com/zerothread?id=1222000

DriveSlowHomie

your fine with an fmu...if you dont have one yet i have one for $60 bucks shipped

chirp3rd

ive been using an fmu for about 2 years running 8-10 lbs on a daily basis and i beat the **** outta my car never had any problems so far.

Cramerox

LOL your comment makes me laugh because you just sound like you are trying to sell you stuff. So before you tell people to stop, back it up with info not a sales pitch- there is nothing wrong with running a FMU. You can run stock injectors with a 12:1 fmu disk. You can even run larger injectors and drop the disk ratio. I ran it on low boost (4-6 lbs) with no problems at all.

98_civic_dude

yes, exactly.

98_civic_dude

well, ive notice that it eats more gas with or without boost. i really dont know how to answer that. i know it seems wierd that my car would be eating more gas without going into boost, but it has.

scartail

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 98_civic_dude &raquo;</TD></TR><TR><TD CLASS="quote">well, ive notice that it eats more gas with or without boost. i really dont know how to answer that. i know it seems wierd that my car would be eating more gas without going into boost, but it has.</TD></TR></TABLE>

For me there has been no change with gas consumption if I don't push it too much.

But when I do stump on it... and do it often...

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sadangryboi &raquo;</TD></TR><TR><TD CLASS="quote">it eats alot whenever u get on it and its in boost....u can literrally just watch ur gas drop...but eventually itll come back some...</TD></TR></TABLE>
This is definitely true...

But since I have a recurring oil leak issue... I don't get to stomp on it as much anymore... What's having a turbo if you can push it?

twkdCD595

As everyone has reiterated fmus are good to a point... maybe say 6-8 psi max.

I personally dont like them because of the excessive high pressure they create... example: @10 pounds of boost on a 12:1 disc, you have 120 psi + base rail pressure of 38 ish psi = 158 psi of fuel pressure total! They can get you by at low boost till you get some quality fuel management but I would not stick with one.

edit note: just looked at a high pressure msd 255 inline pump sitting here, and the max rated operational pressure is 125 psi per the stamp on the casing... to give you an idea of the manufacturer established ratings on parts.



Modified by twkdCD595 at 1:18 PM 4/26/2005

yee SERIOUS

iTrader: (1)

12:1 fmu or 10:1 fmu? i wanna boost 6-7psi daily and 10-12psi at the track, so which one is the one to go with?

CRAZYHONDA

go with the 12:1, you should be running rich