DSMDEMON93
10+ Year Contributor
- 319
- 2
- Feb 18, 2009
-
San Jose,
California
Hey you guys, I need some answers here because I am starting to become lost, 
.
So, I set up my idle specs before for my injectors(Global 17.6%, Deadtime was 85Usecs) On my Evo 560cc, which is odd because these injectors have a factory 0usec deadtime. Either way, the adjustment had to be made, or the airflowperrev would have been out of spec. That was dialed in. Saved. +/- 2% Comb.FT Did a cruise run, a mafcompadj, got it dialed in to nearly 0.4% STFT Mid, and 1.4% STFT Low. I was happy.
Today, I logged on, let the car warm up for 10mins, and viewed my laptop...my combined fuel trim was around 16-17%?! WTF. Why did it changed, i know i saved all my info. I did a "save to ecu" move after every change. I then readjusted the injectors to around 145usecs, and adjusted my maf comp as well.
MY question is: Why was it alright one day. After being checked 2-3 times. Then today, around a week later, its completely wrong?!
.So, I set up my idle specs before for my injectors(Global 17.6%, Deadtime was 85Usecs) On my Evo 560cc, which is odd because these injectors have a factory 0usec deadtime. Either way, the adjustment had to be made, or the airflowperrev would have been out of spec. That was dialed in. Saved. +/- 2% Comb.FT Did a cruise run, a mafcompadj, got it dialed in to nearly 0.4% STFT Mid, and 1.4% STFT Low. I was happy.
Today, I logged on, let the car warm up for 10mins, and viewed my laptop...my combined fuel trim was around 16-17%?! WTF. Why did it changed, i know i saved all my info. I did a "save to ecu" move after every change. I then readjusted the injectors to around 145usecs, and adjusted my maf comp as well.
MY question is: Why was it alright one day. After being checked 2-3 times. Then today, around a week later, its completely wrong?!
