I contacted airtex regards to the inline pump the drag kit comes w/
and these are the specs:

67 gph at 43 psi

100psi= 21.5 gph gphgallons per hour)
90psi= 25 gph
80psi= 28 gph


So people running those 12:1 fmu watch out


[Modified by DRAGLS, 12:18 AM 7/16/2002]

 

What amount of boost will you start to see a problem?

 

They go to 125psi. On the side of them they even say "max: 125psi"

 

I have the Drag kit and I'm still using the Airtex fuel pump and I'm having a problem with it. When I'm driving around in boost (which is often because I just got the turbo), I'm seeing about 15 mpg!@!@! What the hell is up with that? I have a 95 Civic EX and now I'm seeing about 87 miles right below a half a tank. Any solutions?

 

67 gph at 43 psi

100psi= 21.5 gph gphgallons per hour)
90psi= 25 gph
80psi= 28 gph

Here's an example T-25 turbo let's say u turn up the boost to 25psi ya you will get the pressure but u won't get any more volume than if you were at 17psi.

Do you not know what this means the higher the pressure the less fuel it able to deliver. The #'s are directly from AIRTEX.




[Modified by DRAGLS, 1:04 AM 7/16/2002]

 

Ok, well I'm not sure what you are trying to prove with all that T-25 turbo nonsense. First, a T-25 isn't going to maintain 25psi boost on our motors. Next, are we assuming that this is an FMU fuel solution? What rise rate? Anyways....

Of course pressure and flow are inversely related -- that's how it works. What good are those numbers? How much does it flow at 125psi? The airtex pump can mantain enough flow at 125psi pressure to supply our motors (typical 1.8L) with plenty of fuel, I have seen it with my own eyes.

I'm not quite sure what you are trying to prove here.

Dustin

 

so Dustin at 8 lbs of boost with 12:1 fmu disk plus 30lbs static pressure=126

So does that mean that the 125 psi flow of the inline can handle only 8lbs of boost?

 

The pump can /flow/ enough to supply the motor with fuel at 125psi. But it cannot create any extra pressure past 125psi. So that means that past 8psi the same amount of fuel will be delivered. Flow is only significant in that if the pump cannot flow enough at a given pressure, the pressure will drop. Extra flow will not deliver extra fuel to the motor.

Fuel delivery is a result of fuel pressure and injector on time.

If all of the respective components (factory FPR, FMU, pump) were working as designed, the system would "max out" well before 8psi. But the motor will likely still run rich because the FMU setup just dumps so much fuel in.

This is why real engine management systems are such a good idea.

 

tuning is 1/2 the fun anyway.

right?

anyone with me here? anyone?

...hello? *tap tap tap* is this thing on?

(crickets)

 

Booooooo

 

haha
sodustin, which do you like AEM EMS or hondata 4b more?

 

I like the AEM EMS, for me.

Most people will be happier with a Hondata 2b though.

Hondata 4b is expensive, and it's even more expensive if you have an OBD2 car.

 

damn dustin, i admire you with all these knowledge you got...

would this 8 psi max being safe also apply for d16 engines??? thanks... i just cant wait to pay off one more bills so i can get the damn EMS.....