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?

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.

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.

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.

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 =)

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 !!

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.

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...

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

Re:FMU's that horrible?
 

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... 14.6@96mph 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.

Re:FMU's that horrible?
 

dude... everything u need for uber cost less then 100 bux... the burner is already complete so what are u talkin about building? the choice is yours... LS/vtec sleeved with uber = 300+ but the same setup with jus an afc = less then 250... im not tryna tell u what to do im jus tryna hop on the bandwagon and keep up with the world jus like everybody else... if afc's were that great then everyone would still be using them... why does whitey want uber now? cause he realizes u can make more power

Re:FMU's that horrible?
 

With all this uber confusion I must say im not ready for it yet.Im still an ubernoob.Will an fmu work for the time being,until i can learn more about uber?Id love to just pay someone to do the ---- for me but it doesnt seem like that can happen.Therefore an fmu is all id be able to toy with at the moment.Will it be ok @6psi until im ready to sell it and move on with bigger and better things(uberdata)?Im in the process of gathering parts here and fuel management has me stuck!Someone wanna donate their greddy emanage?JAhahahaha........

Re:FMU's that horrible?
 

dude, projekteg is selling pre chipped ecu's with uber basemap for like 120... all u need are injectors and ur set fer life =x but yah the fmu will work.

Re:FMU's that horrible?
 

yes i pmed and emailed him......better to buy another ecu prechipped to keep my p61 stock? or are those non-vtec ecus youre talking about?

Re:FMU's that horrible?
 

oh yeah there non vtec.. .ask him to convert it to vtec for you.. he might charge u a lil xtra tho =x

Re:FMU's that horrible?
 

Yes i have been running on a fmu for the past six months, never had a problem but now i do. Dont know whether it has anything to do with the fmu though, but checking on it and will definitely post on solving the prob.Have a missing at 4500+ rpms and then its gone after that.

Re:FMU's that horrible?
 

cool,i might try out the fmu just to get the kit going then upgrade to uber later....6 months would be more than enough time to survive with the fmu...FMU now Uber later....when he chips the ecus with a basemap isnt it just a chip-in-socket that i can always remove down the road so my ecu functions stock again?No need for another ecu in that case...just more money blown.

Re:FMU's that horrible?
 

---- that...sell the damn fmu unit now and get uberdata....

you'll thank me later

Re:FMU's that horrible?
 

wtf
afc hacks severely advance your timing.
ull blow up your engine sooner or later. i am running turboedit right now, and have used fmu and afc hack before. Fmu ran like ----, afc hack, way too much timing for my liking, and way too rich at idle, not to forget shitty MPG's and hardly any tunability especially with timing. When I switched to turboedit it turned into a whole new machine. Think about it, do it right the 1st time, car manufacturers dont use fmu's and afc hacks in there c ars, they reprogram the ecu, simple.
Soldering the socket in is easy, burner is cheap as hell, for the whole price i paid for all my TE stuff i paid 2x more for my shitty fmu.

Re:FMU's that horrible?
 

so on a completely unrealated topic i have a vafc for sale. its an Apexi. mint, not a scratch on it. 200 shipped.

Re:FMU's that horrible?
 

i didnt buy an fmu yet

Re:FMU's that horrible?
 

good deal then...

dont even waste the money on it...

Re:FMU's that horrible?
 

yeah, everybody knows how smart it is to full throttle shift in a boosted car with a fuel cut rev limit. Just becuase better management intimidates you doesnt mean its not better.

Re:FMU's that horrible?
 

Damn, sad but true. :-\ One of these days I'm going to kick my computers ass.........one of these days.
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Re:FMU's that horrible?
 

I guess your not shifting as fast as I am, hehehe...

You win, uber is better, cheaper, and more adjustment than I'll ever use...

Maybe After I get everything on the car "perfect" and I'm ready to get it dyno tuned, I'll switch over and have a pro. tuner deal with the 150 adjustments...

My car isn't really a 500whp alcy running GS-R, 220-250whp and I'm done...

Maybe I can put uber on my TT stealth, hehehe, it has real power to control...

Sorry for giving you guys a hard time, if I was just turboing my car, uber would be in the cards, instead of a FMU or afc...

You guys really think the uber basemap is better than a tuned AFC map ? ( I mean really, not me trying to be an ass ).

Since I already have the afc, I could use the uber base map to pull timing ( per psi ), and get the general fuel map for the 450s and then fine tune with the AFC on the dyno...

Re:FMU's that horrible?
 

i ran an fmu for about 700 mi on my b16 at about6-7 psi .and everytime i drove it i ripped on it. i hit the rev limiter several times while racing. the car would still be running now but the oil pump broke. i will say this. fmus suck but they will get u buy. simple and cheap(paid like 50 bucks for my vortex fmu). just invest i an inline fuel pump.
** like i said fmus suck,i cracked my motor open the other day and was it ever clean inside, but i was running lean,according to the plugs and valves. imo fmus go rich and lower boost(1-4) and lean out from there. never got to hook the wideband up to it tho.

Re:FMU's that horrible?
 

mine was rich with an fmu til 6psi. at 6psi my afr was like 9.5:1 they max out the stock injectors at like 12 or 13psi but thats super super lean already, 7-9 psi is like starting the lean process and it goes up from there.