i have a aeromotive fpr regulator, the one that is a direct bolt on to the fuel rail. the other day, i went to check my wot fuel pressure. as i pulled off the vacum hose from the side of the fpr, i noticed that fuel would come out of that hole if i held the vacumm hose close to it. i also noticed, that when i pulled off the hole the engine would stumble and then rev up! i think i might have a defective aeromotive fpr, what do you think?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by smokey2.0 &raquo;</TD></TR><TR><TD CLASS="quote">as i pulled off the vacum hose from the side of the fpr, i noticed that fuel would come out of that hole if i held the vacumm hose close to it. i might have a defective aeromotive fpr, what do you think? </TD></TR></TABLE>
I think it's time for a new one.

 

As sayd above the diaphragm went bad

 

damm that sucks, it's not even 6 months old! i'm going to get in touch with aeromotive, and see what they can do for me!

 

update: i sendt the fpr to aeromotive, to have it fixed. they told me, that this type of failure is rare!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by smokey2.0 &raquo;</TD></TR><TR><TD CLASS="quote">update: i sendt the fpr to aeromotive, to have it fixed. they told me, that this type of failure is rare! </TD></TR></TABLE>

it is

 

thread hyjack - but since i got you guys here...

what is the max fuel pressure you woudl run on 290cc injectors? i just installed an ITR intake on the B20VTEC and it leaned it out heaps...

i set the FP to 55psi (no vacuum) to keep the AFR in the low 13's to high 12's

i have a WRX fuel pump installed to help the flow...

is 55psi too high?

 

i don't think it's too high, yesterday i was running 60psi on my 240cc injectors. i also have a 255lph pump, so the base pressure is alittle higher!

 

Im not a real big fan of running high pressures, but 55 is not that bad.It just decreases fuel pump and injector life.
why dont you tune the maps instead of raising the pressure?You'll get better results

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mmuller &raquo;</TD></TR><TR><TD CLASS="quote">Im not a real big fan of running high pressures, but 55 is not that bad.It just decreases fuel pump and injector life.
why dont you tune the maps instead of raising the pressure?You'll get better results</TD></TR></TABLE>
High presure going to be harder on the pump than the injectors. I've run mine as high as 80psi.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Chiovnidca &raquo;</TD></TR><TR><TD CLASS="quote">
High presure going to be harder on the pump than the injectors. I've run mine as high as 80psi.</TD></TR></TABLE> damm, whay so high is there any reason for that? can you elaborate!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by smokey2.0 &raquo;</TD></TR><TR><TD CLASS="quote"> damm, whay so high is there any reason for that? can you elaborate! </TD></TR></TABLE>
Trying to get the most out of my stock injectors with the turbo.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Chiovnidca &raquo;</TD></TR><TR><TD CLASS="quote">
Trying to get the most out of my stock injectors with the turbo. </TD></TR></TABLE>what were your A/F readings, with such high fuel pressure? do you have a dyno graph, with the A/F readings?
BTW i just received my fpr back from aeromotive, they fixed it free of charge. i really didn't think it would come back so soon, they fixed it and returned it in three businness days

 

cheers guys...

i have heard that over 60psi the injector spray patterns become less than desireable...?

the reason i cant tune the maps is im using a VAFC and it started throwing a code once we went past 15% fuel enrichment...

 

I think you may be near the point where you either need bigger injectors and/or Hondata or something similar that will increase your fuel maps. Running high fuel pressures will work, but it will be a strain on the fuel system and you will usually get shitty milage as well. I am now a believer of bigger injectors and lower fuel pressures. Of course, if you go too big, you need some way to control the duty cycles, ie. Hondata, AEM, e-manage(probably the cheapest, but not best)