gorf
15+ Year Contributor
- 673
- 11
- Dec 13, 2004
-
Chapel hill,
North_Carolina
2g running a keydiver chip with 780 injectors, 2.3, 264/272 cams, 1g throttle body, and 20g at 20lbs. SAFCII for fine tuning
I know I am running rich, when I tromp on the gas I blow a large black cloud.
Jeff O suggested evoscan and getting fuel trims. In the spring before it got really hot, at full throttle I was running 11-11.2:1 on my wideband. Now that it hot it is more like 10.5:1
Got evoscan hooked up and logging but on a 2G it is my understanding there are only two fuel trims STFT and LTFT. On evoscan I see three trims low, mid, high - so what do I use?
Now the confusing part following "definitive piggyback tuning guide" and using ODBGauge, for fuel trims I get:
RPM 1000 - STFT - 0
RPM 2000- STFT - -4
RPM 3000 - STFT -10
RPM 4000 - STFT -16
With EvoScan I get:
fuel trim low 2.25
fuel trim mid 4.6
high is .1008
So what am I looking at and how do I fine tune my fuel trims with Evoscan?
I know I am running rich, when I tromp on the gas I blow a large black cloud.
Jeff O suggested evoscan and getting fuel trims. In the spring before it got really hot, at full throttle I was running 11-11.2:1 on my wideband. Now that it hot it is more like 10.5:1
Got evoscan hooked up and logging but on a 2G it is my understanding there are only two fuel trims STFT and LTFT. On evoscan I see three trims low, mid, high - so what do I use?
Now the confusing part following "definitive piggyback tuning guide" and using ODBGauge, for fuel trims I get:
RPM 1000 - STFT - 0
RPM 2000- STFT - -4
RPM 3000 - STFT -10
RPM 4000 - STFT -16
With EvoScan I get:
fuel trim low 2.25
fuel trim mid 4.6
high is .1008
So what am I looking at and how do I fine tune my fuel trims with Evoscan?