So, just as the title says, I'm getting strange readings. I never had a protune done before, I just bolted on some parts and flashed the ECU with the Accessport.
Vehicle Information:
2008 STi
105, 677 Miles
103, 440 Last Oil Change
103, 879 Spark Plug Change
104, 789 Last Coolant Change w/ Super Coolant (50/50) and Conditioner
-Parts:
COBB SF Intake
NGK Iridium Spark Plugs gapped at .028
Nameless Muffler Deletes
-Tune:
Currently- Stage 1 + SF Intake 91Oct (OTS) [Changed due to issues = temporary fix]
Previously - Stage 1 + SF Intake 93Oct (OTS)
Experimented with Stage 1 Economy Mode (OTS) [had a long trip wanted log changes in MPG, if any]
--------
Background Information:
I took a long trip from Northern New York to Philadelphia, PA (289 Miles) on Stage 1 Economy Mode (OTS) just to see if any changes to MPG would surface... Starting suspect that I am going to regret this decision. :unhappy: So, going down, was no problem at all. Upon coming back up, half way through my trip, I noticed "sputtering" in the sense of a jerking due to a loss of power during acceleration in 5th/6th Gear. Noticed huge drops (increase depending if you perceive negative values) in Feedback Knock (as low as -11.80!!! :unhappy: ) and Fine Knock Learning ( as low as -11.77!!! ). At one point, the DAM dropped to 0.550!!! I noticed that whenever Boost was being dumped, the FBK and FKL would make those huge NEGATIVE VALUES. I suspected that it was my map and Changed back from Economy Mode to Stage 1 + SF Intake 93Oct IMMEDIATELY!!! :shakehead: I waited around 15 minutes at the toll booth because I was nervous, then pulled off and had very minor "sputtering" instances but not as much instances as huge negative values as before.
As I further did some investigations, I figured it was time to change those Spark plugs. I was right. The old ones were completely brown and had tons of carbon build up. Installed the NGK Iridiums gapped at 0.30 (for longer life expectancy) and things ran smoothly for a few days. Then.... the "sputtering" again. It caused extreme negative values and I knew that I needed to regap the Plugs to the factory 0.028, I realized that the mistake must have been a foolish move. Damn, I'm starting to second guess everything I'm doing!!! Upon regapping, I realized that the Coil Pack on Cylinder 1 had loosened since the last Spark Plug Change!! HOW?! Again, my face: At this point, I'm about to take a sledge to my motor... but wait... that's not what makes a Subaru owner a Subaru owner.... ray:
So, I fix the gapping issue, and it ran ****ing great for a week! No negative FBK or FKL values lower (or greater, again, depending if you read negative values appropriately) than -2.8. No power losses, neither in 3rd Gear WOT's or Highway Cruising (65 to 78 MPH). Then, the "sputtering, jerking, no-boost-gain-acceleration-that-pushes-you-into-the-seat-feeling, and low rumble (not-as-throaty-or-loud-out-the-rear) noise" came back to rear it's ugly *&^%!#@ head!!! It's about to be a RIP RIP on this motor and my patience for it.... But, again, WWASOD (What Would A Subaru Owner Do?) ray:
Finally, I give up and read a ton of articles on these extreme negative values from COBB posted on their website that someone transcribed and posted to NASIOC [ Click Here: https://forums.nasioc.com/forums/showthread.php?t=2711703 and do a search/ Find In Page for "extreme negative values" ]. So, it seemed to be a Boost Leak issues.... But, really??? REALLY?! Hmm...
I called COBB, but they're taking forever to review the email I sent them with the Datalogs and I need answers!!! Recently, the DAM has been dropping and the FKL has been dipping again into the -5 to -9.8 range. :eek3:
I'm going to post the Datalogs and see if anyone can offer me answers, and preferably, SOLUTIONS!!! ray:
Thanks ahead of time!!!
FILES
WOT 3rd Gear Pull w Low DAM and POS FKL : https://drive.google.com/open?id=0B4draOa__qd7ZUZpbmNTT2hWZnc VERDICT?!-
HIGHWAY DRIVING 91Oct w SF OTS Map : https://drive.google.com/open?id=0B4draOa__qd7M3BuOHdxS0FNUXM VERDICT?!-
Regular City Driving w Jumping FBK and FKL : https://drive.google.com/open?id=0B4draOa__qd7ZXVPWktZX3FqbTQ VERDICT?!- #$&!
Vehicle Information:
2008 STi
105, 677 Miles
103, 440 Last Oil Change
103, 879 Spark Plug Change
104, 789 Last Coolant Change w/ Super Coolant (50/50) and Conditioner
-Parts:
COBB SF Intake
NGK Iridium Spark Plugs gapped at .028
Nameless Muffler Deletes
-Tune:
Currently- Stage 1 + SF Intake 91Oct (OTS) [Changed due to issues = temporary fix]
Previously - Stage 1 + SF Intake 93Oct (OTS)
Experimented with Stage 1 Economy Mode (OTS) [had a long trip wanted log changes in MPG, if any]
--------
Background Information:
I took a long trip from Northern New York to Philadelphia, PA (289 Miles) on Stage 1 Economy Mode (OTS) just to see if any changes to MPG would surface... Starting suspect that I am going to regret this decision. :unhappy: So, going down, was no problem at all. Upon coming back up, half way through my trip, I noticed "sputtering" in the sense of a jerking due to a loss of power during acceleration in 5th/6th Gear. Noticed huge drops (increase depending if you perceive negative values) in Feedback Knock (as low as -11.80!!! :unhappy: ) and Fine Knock Learning ( as low as -11.77!!! ). At one point, the DAM dropped to 0.550!!! I noticed that whenever Boost was being dumped, the FBK and FKL would make those huge NEGATIVE VALUES. I suspected that it was my map and Changed back from Economy Mode to Stage 1 + SF Intake 93Oct IMMEDIATELY!!! :shakehead: I waited around 15 minutes at the toll booth because I was nervous, then pulled off and had very minor "sputtering" instances but not as much instances as huge negative values as before.
As I further did some investigations, I figured it was time to change those Spark plugs. I was right. The old ones were completely brown and had tons of carbon build up. Installed the NGK Iridiums gapped at 0.30 (for longer life expectancy) and things ran smoothly for a few days. Then.... the "sputtering" again. It caused extreme negative values and I knew that I needed to regap the Plugs to the factory 0.028, I realized that the mistake must have been a foolish move. Damn, I'm starting to second guess everything I'm doing!!! Upon regapping, I realized that the Coil Pack on Cylinder 1 had loosened since the last Spark Plug Change!! HOW?! Again, my face: At this point, I'm about to take a sledge to my motor... but wait... that's not what makes a Subaru owner a Subaru owner.... ray:
So, I fix the gapping issue, and it ran ****ing great for a week! No negative FBK or FKL values lower (or greater, again, depending if you read negative values appropriately) than -2.8. No power losses, neither in 3rd Gear WOT's or Highway Cruising (65 to 78 MPH). Then, the "sputtering, jerking, no-boost-gain-acceleration-that-pushes-you-into-the-seat-feeling, and low rumble (not-as-throaty-or-loud-out-the-rear) noise" came back to rear it's ugly *&^%!#@ head!!! It's about to be a RIP RIP on this motor and my patience for it.... But, again, WWASOD (What Would A Subaru Owner Do?) ray:
Finally, I give up and read a ton of articles on these extreme negative values from COBB posted on their website that someone transcribed and posted to NASIOC [ Click Here: https://forums.nasioc.com/forums/showthread.php?t=2711703 and do a search/ Find In Page for "extreme negative values" ]. So, it seemed to be a Boost Leak issues.... But, really??? REALLY?! Hmm...
I called COBB, but they're taking forever to review the email I sent them with the Datalogs and I need answers!!! Recently, the DAM has been dropping and the FKL has been dipping again into the -5 to -9.8 range. :eek3:
I'm going to post the Datalogs and see if anyone can offer me answers, and preferably, SOLUTIONS!!! ray:
Thanks ahead of time!!!
FILES
WOT 3rd Gear Pull w Low DAM and POS FKL : https://drive.google.com/open?id=0B4draOa__qd7ZUZpbmNTT2hWZnc VERDICT?!-
HIGHWAY DRIVING 91Oct w SF OTS Map : https://drive.google.com/open?id=0B4draOa__qd7M3BuOHdxS0FNUXM VERDICT?!-
Regular City Driving w Jumping FBK and FKL : https://drive.google.com/open?id=0B4draOa__qd7ZXVPWktZX3FqbTQ VERDICT?!- #$&!