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Old 08-18-2012, 06:21 AM   #1
notjustforshow
Scooby Specialist
 
Member#: 143277
Join Date: Mar 2007
Chapter/Region: VIC
Location: Richmond
Vehicle:
05 STI PPP OBP
1098, Z1000

Default Data log, no knock but timing pulled

Hi everyone,

I was getting a lot of knock running 94 octane gas using the 91 map, so today I switched back to the 93 stage 2 map. Odd logic I know...

Good news is I am not seeing any knock, and I have no problem getting to DAM 1.0

However the bad news is, I am still getting timing pulled. Still pretty noob at this, so I decided to log my casual driving until I noticed my DAM go to 0.6. It happened with some slight throttle and boost application.
For this reason, I decided not to do a WOT 3rd gear pull.

I have edited the log to spare you a lot of useless data. Needless to say I am in 3rd/4th gear and about 30% throttle.

Any input on what I can check as to why my timing is getting pulled, and why my DAM lowers is much appreciated. I notice my AFR is lean...usually when that timing gets pulled.

https://docs.google.com/spreadsheet/...EZJel82ZGpsT3c

Again, a professional tune is in the plan, however, just sorting out the bugs first, as I think something is mechanically wrong.

Cheers!
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Last edited by notjustforshow; 08-18-2012 at 06:27 AM.
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Old 08-18-2012, 09:41 AM   #2
sidewayz
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Member#: 5810
Join Date: Apr 2001
Chapter/Region: Tri-State
Location: Easton PA
Vehicle:
2001 S366 2.5RS

Default

Afrs are lean coming off the throttle. This is normal. The dam dropping seems like its on throttle tip in. If you notice, the change is where you are in and out of the throttle. You are getting feedback knock as well. Honestly I would look into mechanical issues first.
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Old 08-18-2012, 03:41 PM   #3
notjustforshow
Scooby Specialist
 
Member#: 143277
Join Date: Mar 2007
Chapter/Region: VIC
Location: Richmond
Vehicle:
05 STI PPP OBP
1098, Z1000

Default

Thank you for pointing me in a good direction.

What mechanical issues would likely cause this? I guess I have a lot of reading to do on tip-in.
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