Cobb Stage 1 91 Octane Negative Ignition Correction

[SeanBonham]

Just a quick question (I'm pretty new to turbos and tuning). I randomly get negative corrections while tuned Cobb Stage 1. I know that can be common with WOT in 5th or 6th gear, I don't do this as I know that is bad for the car. I am seeing anywhere from -1.50 to -2.50 on different cylinders when getting on the throttle around town. Usually 2nd or 3rd gear pulls. This is not all the time, seems to happen once a day. I want to make sure I am not causing any damage. I feel like I am noticing this more when driving hard with the AC on.

I know this is pretty useless with out data logs. They are coming.

I am blaming bad gas around here (I fill up with 92 or 93 oct). I am going with a pro tune once I can scrape some cash together. Until then I want to make sure all is okay.

Any help / ideas appreciated!

 

[LilPartyBox]

If you suspect bad gas, monitor Oct Adj Ratio Lrn (Octane adjust ratio learned. -1.0 is HIGH fuel quality, 1.0 is LOW fuel quality.)

 

[SeanBonham]

I've always been at -1.0... I'll post some logs tomorrow. Maybe folks can help me figure out what the deal is.


Sent from my iPhone using Tapatalk

 

[LilPartyBox]

Go back to the stock tune see if it still does it.

 

[SeanBonham]

http://www.datazap.me/u/seanbonham/log-1465411339?log=0&data=4-8
Looks like it went negative at 19lbs of boost at 4500 rpms. Maybe that's my fault...