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Old 08-13-2018, 09:24 AM   #1
John Connor
Scooby Newbie
 
Member#: 489892
Join Date: Aug 2018
Chapter/Region: NWIC
Location: Moscow, Idaho
Vehicle:
2004 FXT 5 speed
Silver

Default Help a noob with his first datalog

2004 Forester XT 5MT 112K miles
Zero mods including base calibration
Fresh air filter, oil change and plugs
2500 elevation at about 65 degrees
3rd gear pull

https://docs.google.com/spreadsheets...it?usp=sharing

Is this some real knock pulling timing and boost? Fake knock? Boost leak? Help a noob out please!
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Old 08-13-2018, 03:01 PM   #2
John Connor
Scooby Newbie
 
Member#: 489892
Join Date: Aug 2018
Chapter/Region: NWIC
Location: Moscow, Idaho
Vehicle:
2004 FXT 5 speed
Silver

Default

I reflagged the factory tune found on RomRaider, filled up with 93 octane, added a real octane booster (putting it over 95) and my log still looks similar.
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Old 08-17-2018, 12:09 AM   #3
bobjr94
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Member#: 6176
Join Date: Apr 2001
Chapter/Region: NWIC
Location: Roy,WA
Vehicle:
15 WRX, 04 wrb STi
85 wrb BRAT

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You went back to the stock map and it still had that much knock ? I might think it was false, there is alot of knock. Look for anything loose on the exhaust like heat shields, missing bolts, broken hangers. Anything loose on the motor, even a bolt or rock bouncing around near the knock sensor. Also, on the next log, try to get grams/rev or mass air. So you can pinpoint it on the base timing map.
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Old 09-19-2018, 03:29 AM   #4
John Connor
Scooby Newbie
 
Member#: 489892
Join Date: Aug 2018
Chapter/Region: NWIC
Location: Moscow, Idaho
Vehicle:
2004 FXT 5 speed
Silver

Default

It ended up being a dirty crank position sensor. All is well now
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