1227730 ecm, AZTY chip and a 3.4 Engine

[RobertISaar]

AZTY is an $88 calibration.

http://www.gearhead-efi.com/Fuel-Inj...Information-88

are you using the ADX from there?

[D Max]

Hello

I used all the files from gearhead...
And a couple of other files....

today, I even tried 3 differend ecm's, just to be sure the problem was not the ecm...
Problem stays the same...

grtz, D

[RobertISaar]

sounds like a problem with the interface then. I was using that ADX for my wife's first car, which also ran $88 until I updated it to $A1.

[D Max]

Today I tried a different laptop => same result

If I have the time, I try tomorrow to connect it to another car (same year/type/model)

Anyone who have some other suggestions to detect what the problem is here?

grtz, D

[D Max]

is it possible I cannot disable checksum in the $88 mask?


grtz, D

[D Max]

Hello

Mask problem is solved.... Was a bit stupid thow....
Was no present in the XDF, but I heard it was the 9th byte
Got the value of 141 for the mask, so I thought I had to look in another byte...

After some hours of searching, suddenly realized... => 141 = 88HEX STUPID of me....

Next problem....
Been searching and reading on the internet, but cannot find it, nor figure it out...
Want to compare the fuel tables against the AFR ratio, so I can adjust the injector opening times.....
Because of the 3.4 with the larger injectors, the ECM has to adjust too much, and because of that, most of the time the engine runs too rich.

anyone who can set me on the right track here?

grtz, D

[dzidaV8]

Hi,
You should probably start with copying injector flow, offset and short pulse compensation tables from stock 3.4 bin. Tuning injectors with measured AFR is not the best way...