injector correction values jtdm - Alfa Romeo Forum
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injector correction values jtdm

does anybody know significance of injector correction values i.e. good or bad
just read off with fiat ecu scan at idle.

inj correction cyl1 = 0.15mm3/i injector code 8SAPHOCAA
inj correction cyl2 = 0.35mm3/i injector code 8HISE6AAA
inj correction cyl3 = -0.52mm3/i injector code AHSLC2AAA
inj correction cyl4 = 0.02mm3/i injector code AHZIDTAAA

number 3 value looks odd compared to others?how closely balanced should they be?
i have always suspected number 3 of sounding different(more metalic tappy).

any advice welcome.
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GT JTDm + Q2

All between -0.9 and +0.9 is good result according to "Bosch Diagnostic" manual... Theoretically good result is that all injectors correction values are zero, but it is unlikely even in case of new injectors and new nozzles. I had values from -0.2 to +0.1 after repair of all four injectors with new nozzles. One of many ECU task is comparing the injectors uniform function and correction is made regards to quality of spraying for each of injectors. You can ask some test of injectors (in workshop with "Bosch" test equipment, see picture) and change of nozzle for item what need much more correction in comparison with others...

Last edited by dusanGT; 28-10-13 at 16:17.
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(Post Link) post #3 of 3 Old 31-08-10 Thread Starter
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this thread is continued in tuning and performance section
could a moderator please close or delete this thread please.
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