DanielTheroff
Greenie N00B Member
This is my first post here so I apologize if I mess anything up!
(For reference, currently have a jbr stage 2 powerpath intake/turbo inlet, turbosmart 50/50 set to full recirc, corksport hpfp internals, jbr rear motor mount, and a catback exhaust on the car. During the time of the first 3 logs, I was on a stratified e tune. I have since reset it to stage 0 to test both.)
When I was doing my maf cal log I noticed some bizarre issues. My fuel trims, short and long term, are all stuck entirely at -.16 and never change, as well as my AFR being pinned at 14.85. The AFR will occasionally jump to 29.25 when coasting in gear, off throttle. What could be causing this? My original guess was a bad upstream o2 sensor, but I can't be certain with my limited experience.
The other thing, something that scares me more. The other day I was accelerating onto the highway, partial throttle, and around 4500 rpm received a 1.89 knock retard. Later that night to test what was going on, I gave it near pedal to the floor and got a mid 4's knock reading for less than a second, where it then sharply dropped off. This was not felt or heard. Later that same night, I did some brief 4th gear highway acceleration at about 70 on the throttle position, 0 knock retard, car ran great! (I should add, although I wasn't logging, prior to the rmm install at WOT I never saw any knock retard. I also got gas from a station yesterday I wasn't familiar with, if that matters at all.)
The next day I reset the car to the stage 0 tune and got some more logs. In town crusing/normal acceleration had 14.85 pinned afr and -.16 stft/ltft just like the stratified map. Highway crusing was the same deal. I did a 2nd gear pull at WOT and received negligible knock retard, boost was limited as it should be, no issues. AFR and stft/ltft still stayed stuck, no change.
I have absolutely no clue what exactly is happening here but it's spooked me enough to stop lurking and to make a post. I have all the log files attached and labeled as mentioned in the post. I'm not going to be driving the car for the time being until I can get this all figured out.
Any help at all is entirely appreciated and valued greatly by my fiancé and I. Thank you all
EDIT: There was slight knock retard on this tune during the maf cal log. I didn't notice this before. I apologize for the logs length as well, my tuner asked for multiple runs on one log
(For reference, currently have a jbr stage 2 powerpath intake/turbo inlet, turbosmart 50/50 set to full recirc, corksport hpfp internals, jbr rear motor mount, and a catback exhaust on the car. During the time of the first 3 logs, I was on a stratified e tune. I have since reset it to stage 0 to test both.)
When I was doing my maf cal log I noticed some bizarre issues. My fuel trims, short and long term, are all stuck entirely at -.16 and never change, as well as my AFR being pinned at 14.85. The AFR will occasionally jump to 29.25 when coasting in gear, off throttle. What could be causing this? My original guess was a bad upstream o2 sensor, but I can't be certain with my limited experience.
The other thing, something that scares me more. The other day I was accelerating onto the highway, partial throttle, and around 4500 rpm received a 1.89 knock retard. Later that night to test what was going on, I gave it near pedal to the floor and got a mid 4's knock reading for less than a second, where it then sharply dropped off. This was not felt or heard. Later that same night, I did some brief 4th gear highway acceleration at about 70 on the throttle position, 0 knock retard, car ran great! (I should add, although I wasn't logging, prior to the rmm install at WOT I never saw any knock retard. I also got gas from a station yesterday I wasn't familiar with, if that matters at all.)
The next day I reset the car to the stage 0 tune and got some more logs. In town crusing/normal acceleration had 14.85 pinned afr and -.16 stft/ltft just like the stratified map. Highway crusing was the same deal. I did a 2nd gear pull at WOT and received negligible knock retard, boost was limited as it should be, no issues. AFR and stft/ltft still stayed stuck, no change.
I have absolutely no clue what exactly is happening here but it's spooked me enough to stop lurking and to make a post. I have all the log files attached and labeled as mentioned in the post. I'm not going to be driving the car for the time being until I can get this all figured out.
Any help at all is entirely appreciated and valued greatly by my fiancé and I. Thank you all
EDIT: There was slight knock retard on this tune during the maf cal log. I didn't notice this before. I apologize for the logs length as well, my tuner asked for multiple runs on one log
