Need help with stage 2 tune.

[SubiEj255]

Was that post supposed to be blank?

[SubiEj255]

I just have a question, which log is better and why

https://docs.google.com/spreadsheet/...zFMa0ZaZDJiN0E
or
https://docs.google.com/spreadsheet/...Td4SzdIQUpUdXc

[EJ257]

I just have a question, which log is better and why

https://docs.google.com/spreadsheet/...zFMa0ZaZDJiN0E
or
https://docs.google.com/spreadsheet/...Td4SzdIQUpUdXc

Neither one is good. That said, the first one is "better" because you aren't pulling timing across the board by having a DAM of 0.

You're pulling quite a bit of timing on both. You need to consider that you either have a mechanical issue, or the car is not taking that map well.

[SubiEj255]

I figured that. What I don't know is the numbers I'm "supposed" to look for? I simply don't understand some of the values what they mean and where they are supposed to be. For example the "DAM" I understand quite well I think, but the FBKC and FKL I don't understand what they indicate.

[SubiEj255]

Mechanical issue? The car only has 20xx miles on it; unless it is a part that I installed wrong..

[EJ257]

I figured that. What I don't know is the numbers I'm "supposed" to look for? I simply don't understand some of the values what they mean and where they are supposed to be. For example the "DAM" I understand quite well I think, but the FBKC and FKL I don't understand what they indicate.

You don't want your car to be pulling timing, which is indicated by either FBKC, FLKC, or DAM.

RomRaider • View topic - Subaru's knock control strategy explained

Mechanical issue? The car only has 20xx miles on it; unless it is a part that I installed wrong..

[SubiEj255]

So the values in FBKC or FKL are supposed to stay at 0? When they aren't at 0 the car is removing timing to prevent knock. Did I get that correct?

What does the "DAM" and "Dynamic adv" indicate?

[Heide264]

Mechanical issue? The car only has 20xx miles on it; unless it is a part that I installed wrong..

I'd vote user error. It's not hard to make an install mistake.

In a nutshell:
Occasional Fbkc = Meh. Short term issue. Stuff happens.
Flkc = stuff needs fixed
Dam/iam at zero = stuff needs fixed now

[EJ257]

So the values in FBKC or FKL are supposed to stay at 0? When they aren't at 0 the car is removing timing to prevent knock. Did I get that correct?

Yes. FBKC should always be 0 (ideally). FLKC should always be 0 (ideally), but will be negative if you pull timing, and will only be positive if IAM/DAM<1 and it's "testing the waters" in an attempt to raise the IAM/DAM back up.

What does the "DAM" and "Dynamic adv" indicate?

DAM: Dynamic Advance Multiplier (IAM, in the link I sent you)
Dyn Adv: The amount of timing being added to the base timing table

Ignition Timing = Base Timing + DAM*DA + FBKC + FLKC + Compensations (IAT, ECT, etc.)

As a general rule, it's pointless to log either Base Timing or Dynamic Advance; essentially, they're just wasting bandwidth, which is already limited with Cobb logs.

Occasional Fbkc = Meh. Short term issue. Stuff happens.

Depends what you mean by "occasional"...

If you get repeated FBKC in a similar RPM/Load range (but not every time), you're too close to the knock threshold, and need to address it. If RPM/Load FBKC can't really be replicated, it's not that big of a deal, assuming it's the first iteration (there's a table that explains what the FBKC retard value is).

[Heide264]

So the values in FBKC or FKL are supposed to stay at 0? When they aren't at 0 the car is removing timing to prevent knock. Did I get that correct?

What does the "DAM" and "Dynamic adv" indicate?

First paragraph, yes.

Second paragraph.. I am not sure about Cobbs DA. I just know DAM infers there was enough fine learning (flkc) that the car decided it's time to pull timing across the board with rough correction (dam in cobb/iam in open source)

[SubiEj255]

ok, I am learning slowly, but surely and I definately appreicate the help.

How about this log?

https://docs.google.com/spreadsheet/...nQxSHRuV25ZeVE

[EJ257]

ok, I am learning slowly, but surely and I definately appreicate the help.

How about this log?

https://docs.google.com/spreadsheet/...nQxSHRuV25ZeVE

That's a lot better. What map are you running?

I don't like the >100 IDC, but it's not knocking.

[SubiEj255]

Ok, see I thought so. Is overboosting an issue in that log?

Here are the maps as follows: the very first log was an e-tune map that the tuner said the car was running fine. So I paid for that. The second log was a standard Cobb OTS stage 2 93oct map and the last and an OTS stage 2 93oct LWG Cobb map.

Overall, minus the idc's the log is "ideally" supposed to look like the last log I posted right?

[EJ257]

Here are the maps as follows: the very first log was an e-tune map that the tuner said the car was running fine.

Without seeing the map, and only going by the log, I would disagree that the car was "running fine".

The second log was a standard Cobb OTS stage 2 93oct map and the last and an OTS stage 2 93oct LWG Cobb map.

Overall, minus the idc's the log is "ideally" supposed to look like the last log I posted right?

You're overboosting with the LWG map. I would say try flashing the Cobb OTS S2 91 map (continue to fill with 93) and see how that looks.

[Heide264]

I am surprised he is at 100idc. The wrx and sti run the same injectors, correct? If so, I am still under 100 idc.