FAST 36# injector data for 98 corvette return fuel system?

[myws6formula]

I know these injector data threads pop up fairly often looking for injector data when using the 3800 sc injectors / FAST injector but I can't find anything for these on a return system.

If I could take a peak at the sc3800 file it would likely have what I need but that doesn't seem possible since EFILIVE does not support the OS.

Anyway does anyone have the data when used on a 97-98 corvette?

[macca33]

I copied the data from the Corvette ASA tune on TuneFileDepot. Dunno if that helps your application though.

cheers

[myws6formula]

I will have to check for sure but I had been told the 98 asa tune had incorrect injector data. they changed the flow but nothing else

[krisr]

I did the same as Macca when I put FAST 868 injectors into my Monaro and just nabbed them from the ASA tune. In my instance I found they changed more than just flow data when I used the parameters after my upgrade from 28lb/hr injectors. The injector pulse width adjustment was slightly different and I *think* the minimum IPW was slightly different too.

[maudyZ28]

the tune in the thread here is what i used

http://forum.efilive.com/showthread....e-spark-v-high

the data is the same as Mr prick posts later on anyway. there may have been a problem with the 98 ASA tune but it apperas the flow data on this 2000 tune are ok. As Krisr says there are more than flow data tables that are different

[myws6formula]

but since the 98 uses a return rail the flow changes and so would everything else.. I cant be the only one using these with a return rail can I?

[joecar]

Which year/model/vehicle do you have...?

1997 Corvette had a MAP-reference return fuel rail (FPR at the rail).

1998+ Corvette had a un-referenced returnless fuel rail (FPR at tank).


Are you sure your fuel rail is the return type...?
Do you see a reference hose connecting the FPR to manifold vacuum...?

[joecar]

If you do have a return rail then do this:

from the tune file mentioned above you copy all the injector tables;

then in B4001: copy the zero MANVAC cell to all other cells (flatline);
then in B3701: copy the zero MANVAC row to all other rows;


important: measure rail pressure, if it is not 58 psi then fix the cause.

[myws6formula]

this is a swap motor.. (back when I did the swap I had to order the fuel rail and had to use a 98 corvette vin to get it since it was back ordered by gm).

using a 411 pcm with a 02 f-body OS but currently has the 98 injector tables in it.

Thanks I will have to sit down this weekend and set this up so I can install the injectors

[myws6formula]

I'M not sure im understanding correctly. if I flat line the flow rate with manifold vacuum it will be off.


I say this because if i look up a stock corvette tune the injector flow still has a slope.