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I'm sorry but I find your data graphs very difficult to interpret. I guess I'm just spoiled by Snap-On, lol.
Just to be clear, are you chasing negative fuel trims because you happened to notice they are negative, or is there a fuel trim related trouble code or driveability symptom?
On top of total fuel trim, it is important to be aware of loop status as well.
It's not uncommon in my experience to see some unrealistic trim values when in open loop, which can occur during wide open throttle, deceleration, warm up or under various other driving conditions where power output or keeping the engine running smoothly is more important than running exactly at stoichiometric.
Yeah sorry for the graph, quite difficult to read.
I just happened to see they went negative as soon as i pressed the pedal. I feel no driveability issues and service manual says total fuel trims are good if +-35%
Cannot see the loop status with my scanner (you have to scan it with a special suzuki scanner to do more stuff) but i will assume that at wide open the loop opens and trims are 0. Just wondering why if i stay at 2k-3k rpm trims jump from -12 to -20.
Did blow through both but only one way worked. Its working fine.
Took injectors out yesterday. Its a four holes injector and only see two streams of liquid going out, not really atomized. Also think they are not the original ones. Maybe a chinese copy. They say "bosh license". Dont know if that mean they are original or not but rare thing they are not japanese (denso).
Trying to find the original ones in a junkyard to test them.
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