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FMU's that horrible?

Old 10-22-2004, 05:02 PM
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Default FMU's that horrible?

How horrible are fmu's? Every thread ive read recommends uber with 450 dsms.I understand this is a better choice for people tuning for power and higher boost levels,but will an fmu keep me on the safe side if I stay 7.6 psi or lower?FMU seems so much easier and so much more comprehendable in a DIY case scenario.I want to do everything right in this setup so i dont have to worry about calling AAA every weekend.So does anyone in these forums have a b16a/b17a/b18c/etc. with low boost and fmu and get away with healthy fuel managment?
Milanogisser is offline  
Old 10-22-2004, 08:56 PM
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Default Re:FMU's that horrible?

FMU is ok for under 6psi. Even for my first turbo I went Uberdata from the get go. FMU's really are crap. Think about 100+psi at your fuel rail and what it can do to your injectors.
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Old 10-22-2004, 08:59 PM
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Default Re:FMU's that horrible?

with 240cc injectors the appropriate disc would be a 12:1. With that said at 7.6psi you would be running 40(base)+(7.6x12)=131psi of fuel pressure. Thats a lot of fuel pressure.

Think of it like this. You are at a concert venue and there are 60,000 people sitting outside the door. Every time they open the door only 50 people should be able to come through, but instead 200 people shove their way through. Think of the amount of opportunities where things will go wrong. Same thing goes with a FMU setup. Pushing injectors to the brink is a terrible idea.
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Old 10-22-2004, 10:16 PM
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Default Re:FMU's that horrible?

Im doing a setup for my ac using uber but I know a few people running fmu's and they dont have problems with there cars and they use them every day.I got a friend doing high 12's 1/4 mile using a fmu.also aint it strange how some companys sell there turbo kits with fmu's.I was going with one but after all the ---- I heard on this site I changed my mind.besides uberdata is cheaper than a fmu so I sent my ecu to projekteg for surgery.
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Old 10-23-2004, 02:48 AM
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Default Re:FMU's that horrible?

im using an fmu with 7psi on my 92 integra LS... works fine... waiting for my ecu to come back with uber then puttin in the 450's and uppin the boost =)
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Old 10-23-2004, 03:55 AM
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Default Re:FMU's that horrible?

My zex kit ran 9 bottles through at around 85psi FP and half the bottles were on two injectors instead of four !! ( DPFI )..

I would go past 6-7psi with a FMU and with so many other great options for hondas, it seems kinda dumb...

I would however, use a FMU on a car that lacked aftermarket parts and support, something weird like turboing a issue rodeo or something goofy like that...

FMUs generally spool turbos slower, and get crappy gas mileage too...
Do you really need 57psi at 1psi of boost NO WAY !!
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Old 10-23-2004, 05:23 AM
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Default Re:FMU's that horrible?

"besides uberdata is cheaper than a fmu so I sent my ecu to projekteg for surgery. " Awesome....Whats the going rate on ecu manipulation in here?When Im ready that is..(pre-christmas)...Can i just write down my setup and send in my p61 to get plugged into the matrix? That would solve all my problems.
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Old 10-23-2004, 06:14 AM
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Default Re:FMU's that horrible?

Well... that's the bad part about all these "burnable chip" kinda deals...

#1 most of it isn't super user friendly like a AFC
#2 most of us aren't "in the know" in regaurds to fuel timing curaroo spec retard value graphs
#3 its kinda sucky to buy a burner just to burn chips for you honda
#4 soidering the new socket in isn't as easy as it sounds
#5 its still kinda new, and by the time you get everything done right on your car with XXXX program, someone else will make XXXX-2 program the is better...

If you need 11-12psi ++++ the new chip editor are great, but for 10psi, I vote AFC hack, assuming your not using a 60-trim garrett GT series with a .65 AR turbrine housing at 10psi on a stock motor...

Most stock blocked D16s will never need the kinda EMS that the chip editor offer...

Plus the AFC is resale-able for what you pay for it ( if you buy it "used" )...

I've got a chip that is supposted to be re-mapped for 450cc injectors, and to not flip-out at the sight of boost, but I've never needed/bothered to get it installed...
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Old 10-23-2004, 07:51 AM
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Default Re:FMU's that horrible?

i disagree with you in every way possible... afc is user friendly but uber takes tuning to another level... rev limits, launch controler, full throttle shift, vtec engauge disengauge, cold idle, warm idle, moving idle, timing retard per boost, fuel injector controling for any size injectors... the uses from uber are endless... for the price of the burner, chips, solder gun, and all the little do-dads for uber, your saving like over 100 bux and you can do so much more with it?

burner is like 50 shipped, chips are 3.30 each, zif socket is like 7 bux, resistors are like a dollar, capacitors are like a dollar, UBER IS FREEEEEE...then jus take ur time installing it then bam... u basically got an AEM standalone with datalogging... can u get full datalogging with ur afc? be real mr. "im running rich at idle" afc's are cool but if u had uber that woudn't be a problem =x
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Old 10-23-2004, 08:49 AM
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Default Re:FMU's that horrible?

Originally Posted by turboDA6
uber takes tuning to another level... rev limits, launch controler, full throttle shift, vtec engauge disengauge, cold idle, warm idle, moving idle, timing retard per boost, fuel injector controling for any size injectors...
My rev limit is fine, I don't need/want to laungh with boost, I do full throttle shift, I have no vtec, I don't need 15 idle adjustments ( or maybe I do, hehe ), timing retard is cool, and I'll never out power the DSM 450ccs...

SO... $200 AFC vs buying, soidering, hope, programming, building your personal hondata...

Its really to building the burner and the PC stuff that is involed in it...

I'm also not "mister gotta have a 500hp FWD car" guy... 250whp is the most my car will ever see...

If all that stuff was controlled in a box like the AFC, I'd be all for it, but the PC stuff is pretty much scarying me away ( car/turbo guy, not PC guy ).

Too bad it doesn't have nitrous control, nitrous timing retard, water injection control, and about 50 other features that are kinda pointless to the 200-250whp guys...

I don't doubt your right about my idling rich problem... Maybe I'm just grabbing at straws to keep for changing my set-up, hehe... [email protected] with a stock clutch, 1 1/2'' stock exhuast, full/stock Si interoir, and dry rotted tires on 10psi.... The Hacked can't be too bad ( did I meantion I was shifting at 6000rpms and that was my one and only run that day ?? )..

Ok, stop it.... your making think about installing the chip that's been sitting for the last 8 months, hehe.
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