like i was saying. Im going extremely budget style. An intercooler will get done. But im keeping it dual point. and my last question was, what exactly is an FMU?

 

ok guys, just did some reasearch on fmu's. I got it all figured out now. Ill probably be going this route. Now my question is this. What type of FMU should i get. from teh reading i did, it seems thata certain fmu is made to work at a certain 'set' a/f ratio. Whats a good a/f ratio for my setup? (d15 with a TD05h/T-25/RHB5) and im sure its better to be too rich then lean....

 

well...not really. a fmu just bumps the fuel pressure up. lets say, a 12:1 fmu bumps the fuel pressure 12 psi for every pound of boost. this is why no one likes them because at, for instance, 8 lbs. of boost, you have 96 psi of fuel pressure plus the stock fuel pressure.

 

so basically I should keep it at low boost(5psi or so) and get one thats like 8:1 or so? Would that be better?

Im really learning alot guys, thanks!

 

i dunno about the different ratio fmus, but i think every1 on here that runs a fmu is either running 12:1 or 10:1. yeah just keep the boost down and you'll b fine

 

well 10:1 at 5 lbs would be 50psi on top of what its already sending...is that even that high? what would be too excessive?

also ona side note, ive been looking at BOV's. I think ill just get the 1G eclipse one. or do i need a manual boost controller to do this? Or if i have a manual boost controller alone, I dont need a BOV? I kinda want one anyways, just wondering.

 

i used a FMU on my 187k mile d15b2 with DPFI for a few months. 6 psi most days and when i felt a little nuts i would turn it up around 12. held up pretty good. it finally let lose on a 9psi 3rd gear pull

 

that'd be 50psi+whatever it runs with no boost so you'd be at like 100psi


what kind of power were you putting down iwth this?

I got a civic that im going to probably end up putting the mpfi onto...but who knows

if the fmu would work i might as well rape the ---- out of it and have some fun.
but i think the mpfi /a6/or z6 swap would be better overall it'd give lots of power...but who knwos

nathan

 

nah man i totally know what you mean. If i was going to do this the real way id go mpfi for sure. Its just that Im selling this car soon. and I dont even wat to be spending as much as I am on this. Im trying to save up for my 5th gen civic. I will not cheap out on that car. I just want the cheapest way to boost this thing and have it be fairly reliable. its not like im gonna see redline at every stoplight. Just for occasional use. I think this setup should be ok..

 

yeah

that sounds good

you're starting to make me question if i want to just say ---- it to the mpfi converstion im going to do on my civic and just boost it a little bit w/ a fmu unit becuase i can get one for like $50. I already have most of the ---- that is neede for the converstion and all of that but who knows. If i really wanna do it right I'll just pull that motor and put a d16z6 and boost the **** out of it...which is prolly what i'll do

nathan