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Old 10-02-2011, 06:04 PM   #1
Scooby Newbie
Member#: 291349
Join Date: Aug 2011
Chapter/Region: MAIC
Location: Pennsylvania
2013 Mustang GT

Default Cobb Datalog Help

I posted this in the Newbie section and got no response. So I figured I would try here.

I just got my Cobb AP v2 yesterday and ran some datalogs on it. I did some searching and read some threads about analyzing the datalogs. My datalogs are reading 0 feedback knock and 0 fine knock learn. Also my DAM is around 1 which I heard was good.

Is there anything else I should be looking for in these datalogs? Also, is all this information I researched correct about the knock and DAM?
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Old 10-03-2011, 11:02 AM   #2
Cobb Tuning
Member#: 4803
Join Date: Mar 2001
Location: Austin, TX

The DAM will drop to an initial value (depending on the map) after you install the AP, reflash a new map, reset the ECU (via AP), or disconnect the car's battery. For the 2.5L cars, it should learn up to 1.0 over a period of driving until you perform one of the above procedures again, where it will drop to an initial value again. If it drops below 1.0 otherwise, that is indicative of a problem with knock.

Fine knock learning and feedback knock correction of zero are ideal, but every car will have some reported knock at times (may not be actual knock). You will usually get the occasional correction a low loads (< 1.0 g/rev) and this is normal. You will also see correction when mashing the throttle or upon a hard shift, which is also normal. Where knock is a concern is where you have multiple counts of correction (extreme corrections worse than -2.x, for example) or where you have repeatable corrections at high load (even single count), such as wide open throttle (WOT), except for the throttle mash/shift knock just mentioned.

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