Mitsuturbo
20+ Year Contributor
- 87
- 5
- Feb 5, 2003
-
Seattle,
Washington
FIrst off.. this was done on 17psi, 91 Octane, and 34deg IATs. (yes, utah is THAT cold right now)
Ran some quick logs on the car last night, and i "know" my o2 sensor is pretty well shot, changing it tonight most likely, but my question is this.. do the o2 voltages affect how much timing advance you're getting? I assume they do, since it's the ECUs ONLY way of knowing how rich/lean things are running. Since my o2 is peaking at like .76v, i am speculating that this is why i am only seeing like 14-15 deg. timing advance. Correct?
this was with ZERO knock as well.. in case you were wondering
I lowered boost to 9# and got 22deg of advance, (saw the same o2v) so i'm left wondering if the ECU isnt comparing Hz to o2v and basing timing from there
I know the 2g is stingy with timing and basically "pulls" timing on the higher airflow maps. I have been told by a great many people that the 1g/GVR4 is not like this.
Thanks.
91 GVR4, 8.8:1 compression, Ported head, evo3 big16, 3" turboback, 550's, 2g maf, SAFC, SITC, DSBC-R, Apexi EGT
Ran some quick logs on the car last night, and i "know" my o2 sensor is pretty well shot, changing it tonight most likely, but my question is this.. do the o2 voltages affect how much timing advance you're getting? I assume they do, since it's the ECUs ONLY way of knowing how rich/lean things are running. Since my o2 is peaking at like .76v, i am speculating that this is why i am only seeing like 14-15 deg. timing advance. Correct?
this was with ZERO knock as well.. in case you were wondering
I lowered boost to 9# and got 22deg of advance, (saw the same o2v) so i'm left wondering if the ECU isnt comparing Hz to o2v and basing timing from there
I know the 2g is stingy with timing and basically "pulls" timing on the higher airflow maps. I have been told by a great many people that the 1g/GVR4 is not like this.
Thanks.
91 GVR4, 8.8:1 compression, Ported head, evo3 big16, 3" turboback, 550's, 2g maf, SAFC, SITC, DSBC-R, Apexi EGT