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-   -   rich idle deatschwerks 700cc injector (https://www.ft86club.com/forums/showthread.php?t=139487)

jau 03-21-2020 05:34 AM

rich idle deatschwerks 700cc injector
 
hey guys,

i have installed 700cc injector on my turbo frs. plugged in the data recommend from their website and im getting 13.8afr when idling and itll stable at target 14.7 afr after 30 seconds.

any idea how to limit the rich idle?

Thanks


Jau

tomm.brz 03-21-2020 06:06 AM

what did you write in the port injector scaling cc table?
what s your LTFT?

jau 03-21-2020 01:32 PM

Quote:

Originally Posted by tomm.brz (Post 3311278)
what did you write in the port injector scaling cc table?
what s your LTFT?

i wrote 700cc/min initially and diabled back to 670cc/min. it makes the idle stabilized to target afr faster but seems not much effect when dial back further...

LTFT is 0

tomm.brz 03-21-2020 04:20 PM

if LTFT has been disabled by you, then what is STFT during the rich phase?
a smaller value in the port scaling table will tend to richen up things
From the technical datasheet and the pressure at which PI run with, i would put AT LEAST 780cc/min
Did you modify PI% tables and injector latency table, and reduced cranking fuel?

jau 03-22-2020 01:14 AM

Quote:

Originally Posted by tomm.brz (Post 3311393)
if LTFT has been disabled by you, then what is STFT during the rich phase?
a smaller value in the port scaling table will tend to richen up things
From the technical datasheet and the pressure at which PI run with, i would put AT LEAST 780cc/min
Did you modify PI% tables and injector latency table, and reduced cranking fuel?

The short term fuel trim is steady around 0 to +3%
i tried from 700cc/min to 650cc/min, the time it takes to return 14.7 from 13.8 has been shortened but when i dail it further down to 590cc.min, the time it takes remain the same.
should i go higher value instead of lower?
what is the fuel pressure in Frs?
i did modify all the latency, pi% table and reduced the crank fuel table as per the data sheet

tomm.brz 03-22-2020 06:59 AM

it s about 55-58psi
Try with 750-780cc value

tomm.brz 03-22-2020 07:31 AM

can you do a log starting it before cranking with ignition on?

jau 03-23-2020 02:24 AM

1 Attachment(s)
Quote:

Originally Posted by tomm.brz (Post 3311607)
can you do a log starting it before cranking with ignition on?

attached log file. injector scale 650, it will take idle for about 30 seconds to get back to 14.7 afr after running the car.


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