xclr8ingc5

Hi, I have a 1999 c5 with a head and cam package with a tune from
cartek. However i have had fueling problems since it was installed and
decided to get ls1 edit some time ago before hp was available of course.

Question? I recently suspected the injectors as part of my inconsistent
fueling and decided to do some homework. I am still running the stock 26#s
and thought they might be the problem or part of. I found the injector flow
calculator in the stickys and input my stock numbers and to my suprise it
spit out the identical numbers however when comparing to my tune it looks
as though my values gm/sec are put in backwords under kpa values.

for example: at 20kpa 3.65gm/sec and at 100kpa 3.33gm/sec
injector flow rate calculator shows same values but gm/sec increases with
kpa not decrease?

I am not a seasoned tuner but this doesnt appear right but instead looks
like values are reversed. Unless I am missing something with the way ls1
edit works or dont understand what I am looking at I would assume this is
a big part of my problem.

Please give me any input or let me know if I am correct on this so I can
correct my tune or learn something new.

Thanks,
xclr8ing c5

jimmyblue

iTrader: (11)

Table basis is kPa -vacuum- in most tools (BARO-MAP).
But I vaguely recall Edit may be opposite from others?

SSpdDmon

iTrader: (10)

EFI Live's take on this is....

IFR shows 3.328125 grams per second at WOT (sea level) and 3.648438 at a MAP equal to 21.3kPa for stock 26lbers.

xclr8ingc5

I understand and that makes sense why my table goes 20 to 100kpa
instead of 0 to 80kpa. However I would like to add bigger injectors and
it looks like I would need to adjust injector flow rate and injector offset with
Ls1 edit. where would I find a calculator for ls1 edit for offset and flow rate?
Also are there files or charts available for me to look at to adjust accordingly.
I am thinking of going to a 28# gm injector from a ls1. I can buy a set very
cheap and with my combo and elevation it should work fine.
When I make a major combo change or power adder I will upgrade the fuel
system accordingly. I live in great falls, MT and am at 3800ft and a normal
day at the track is about 5500 to 6500 density altitude. My combo should
produce around 420 rwhp, so 28#s should work for awhile.

Thanks for help and any other input is appreciated,
xclr8ingc5

SSpdDmon

iTrader: (10)

I'd say, see if you can find a copy of a stock '02 tune and take the IFR settings from there. I'm not sure how Edit works vs EFI or HPT, but that's what we end up doing for the 26lber to 28lber swap.

slow

iTrader: (7)

Are you talking about the Excel spreadsheet, I noticed the same thing last week, was like "wtf" how are my injectors flowing more at wot, as the spreadsheet appeared to be backwards.



Ryan

xclr8ingc5

well that makes sense and I am feeling really outdated running Ls1 edit.
Is there no Ls1 edit files in this forum? I see plenty of Efi live and hp files.
It is appearing like I will have to convert one of those tune files. Unless
someone knows where I can find a stock tune file with ls1 edit for 2000 or
newer ls1 so I can run 28#s instead of 1999 26#s.

If anyone knows where to find or make it easy for me that would be cool!

thanks,
xclr8ingc5

Bink

Here you go...the LS1Edit Library ->> http://www.ls1edit.com/filelib/index.php?

ditto jimmyblue - Edit had the IFR values backwards in early versions if I remember correctly.

xclr8ingc5

Thanks, I am good to go now. I knew they were out there somewhere, I
wasnt looking in the right place.

Thanks,
xclr8ingc5