Hey folks,
I have a 12:1 fmu and the inline pump that came with my turbo kit. I also have an intank warlboro 255 can i use that instead of the inline? The reason I ask is cuz i want to install my turbo kit but don't want the hassle of wiring up an inline pump. I need to get my car running so i can drive it from RI to NY for the hondata install/tune but i don't to bother installing the inline. I hope that makes sense.

 

is it the high pressure pump?
Either way you should be fine.I'm using a holley 255lph high pressure intank pump in my set-up.
How much boost do you plan to run?

 

yes it's the high pressure pump. i was going tu run 6.5 psi til i get the hondata installed. So I can run an intank with the fmu and have no problems? Is this correct?


[Modified by itr449, 8:41 PM 2/5/2003]

 

Yep it will be fine.
I've ran 10psi with no problem. I run .45bar rite now and i'm switching to .65bar later tonight..

 

I know it will supply enough fuel for my set up i'm just curious how it will run. will it idle funny or rich or anything like that? Do I have to turn the fuel pressure down via a fuel pressure regulator?

 

I am soon to be boosting my D16Y8 and will only be running around 5 psi. I am wanting to run a 12:1 FMU and a intank if possible..But I guess this post answers that. (itr449, free bump for ya.)

 

My brother in his teg running 6.5 lbs of boost used a walbro 255HP intank and a 12:1 fmu. He didnt have any problems. He was a bit rich, but nothing major. He ran like that for about a 7 months.

I'm actually going to run 6.5 lbs on my b16a3 sol and use a 12:1 fmu and walbro 255Hp intank.

Most people say that you need the inline to supply more pressure, so that the fmu can function better. either way, w/ a 255HP and a 12:1 you should be ok.

 

Yes you will need to lower the fuel pressure at idle via a fuel pressure regulator.When i installed my pump it raised my fuel pressure up to about 56psi so i bought a aem fpr to drop it down about 40psi

 

Thanks that was exactly what i was looking for. Is 40psi typical idle fuel pressure? Or is it specific depending on the motor?

 

we have been through this soooooo many times. intank fuel pumps cannot support high pressures that you run w/ FMUs. They are meant to flow lots of volume between 40-70psi pressure, not 140psi like u run on fmu.

if u r going hondata just install the intank and be careful.

I ran on the walbro "high pressure" 255/L intank w/ my car on 8psi and even though it accelerated good, when i put the inline in it was like 30hp faster.

 

thanks

 

Yes you will need to lower the fuel pressure at idle via a fuel pressure regulator.When i installed my pump it raised my fuel pressure up to about 56psi so i bought a aem fpr to drop it down about 40psi


how did he drop the pressure? I have a B&M adj FPR and I can't turn the fuel pressure down....i am turning it the correct way also

 

>>how did he drop the pressure? I have a B&M adj FPR and I can't turn the fuel pressure down....i am turning it the correct way also<<

That's what I was wondering. Typically people install a aftermarket FPR in order to get *higher* than stock pressures, so the stock FPR usually yields the lowest fuel pressures you can get. At least I thought so...

 

why did the fuel pump raise the fuel pressure?

 

what kind of pump did u install?

 

The b&M fpr is a fuel pressure RISER. You cannot lower the fuel pressure using one of those unless you drill it out (not recomended)

 

Because it's a high pressure/volume fuel pump and it flows more fuel then the stock regulator can control (return to the fuel tank)

 

It's a holley 255lph high pressure fuel pump...
Mine works fine for my fmu set-up at 9psi.
I'm also runing a 6:1 fmu and 310cc injectors instead of a 12:1 and stock

 

thats odd because my walbro 255hpl pump is a high volume high pressure pump as well and when i installed it my fuel pressure stayed the same as stock.


[Modified by DIRep, 5:56 PM 2/6/2003]

 

can some one help me i have a 96 hatch with a 96 ls swap drag gen 3 turbo kit 6.5 7 lbs walbro intank fuel pump one degree colder spark plugs vortec 12:1 fmu and a aem fuel pressure regulater and im leaning out everytime i get on it can anyone tell me what my problem could be

 

damn dude, your fuel pump has more horse power than my car!

 

who the **** is this and how come everytime u post its the same damn question! i told u twice already, put a ****** inline fuel pump in there!

 

I guess he doesnt trust you Personally I dont know if the intank would work, but I have always been told that you want to use an inline with a fmu setup....but most of the people that posted in this thread said they used the intank without problems (although I bet they never hooked it up to a wideband....)

 

take it easy.not everyone can be a turbo guru like you....................lol

 

genop, my fuel pump has more horsepower than your car because its HP (high pressure)!!!