ok we started tuning my car again tonight and at 23psi it made 465 but the problem we are seeing is the duty cycle is up at 97% with 1000cc injectors, a1000 fuel pump and 55psi of static FP. Does n e 1 have an idea why we are running out of injector???

 

what r u tuning the car with? if ur tuning with uberdata then dont worry about the duty cycle funtion. it is not accurate

 

he has AEM EMS being tuned by jdogg

 

bump

 

Have you checked all physical aspects of your fuel system? The only thing I can think of is that your fuel pressure may not be rising with boost pressure.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by daveG &raquo;</TD></TR><TR><TD CLASS="quote">Have you checked all physical aspects of your fuel system? The only thing I can think of is that your fuel pressure may not be rising with boost pressure.</TD></TR></TABLE>

fuel pressure is rising with boost.

 

is the wideband correct? what's teh A/f? just asking cause maybe wideband says 11.5 but is really 9.8...

how do the plugs look?

do you have the right injector selected within AEM? is the multiplier correct?

what size lines are you running to and from pump to rail? is the gas tank sumped?

 

wideband is fine and the plugs are mint yea jdogg is doing all the tuning and i am sure it is correct, i have -8an lines and yes the tank is sumped

 

you may have a top end volume issue. like lines and a fuel pump that isnt up to the wask. it isnt always the pressure that you need. it is the physical volume of the fuel that you need.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boostedcivicsir &raquo;</TD></TR><TR><TD CLASS="quote">you may have a top end volume issue. like lines and a fuel pump that isnt up to the wask. it isnt always the pressure that you need. it is the physical volume of the fuel that you need.</TD></TR></TABLE>

everything he has is top of the line and brand new.

 

what's the fuel pressure at @ 23lbs?

 

im pretty sure it rises to 65-70

 

70psi at 23psi i thought it maybe the filter or something only cause i figured we would be closer to 100psi of FP at 23psi

 

shoudnlt it rise i psi for every psi of boost so for 55psi fp and 23psi of boost shouldnt it be around 78?

 

what filter are you running? i remember aeromtoive wants you to run dual filters. you said -8an line, it is -8 feed and -8 return?

something is up with fuel volume, where is the pump at in position to your tank sump? shoot some pics, i know the pump has to be within a small distance and no more than a few inches taller.

but if running the std aeromotive regulator, shoudl rise 1lb per 1 psi.

how is the fpr run? -8 line?

are you sure they are 1000s?

what's your vacuum source to the regulator?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by seen4ever &raquo;</TD></TR><TR><TD CLASS="quote"> are you sure they are 1000s? </TD></TR></TABLE>

Donnie, Dave and I were thinking the same thing

 

the part number ont eh 1000cc should be 17113744 for the delphi rochester injector which you probably have just check the side for the part #