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Old 12-19-2017, 09:15 PM   #7
Tor
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My theory is that our tolerance for ECU knock management activity, as a community, is far less than that of Subaru. I mean, with open source and without the benefits of custom maps, where do we compromise?

Example 1: High levels of FLKC (more than -2) at high speed/gear/rpm without IAM drop.

Example 2: Shift lazy and accelerating from low rpm in high gear (5th/6th) with moderate/aggressive pedal pressure. Moderate levels of FLKC enough to drop IAM to e.g. 0.8.

My interest in seeing a stock log came about because of example 2. In one log I saw it drops IAM from 1 to 0.8. But in a matter of just 40 seconds, it's back to IAM 0.97. So... Adjust the tune? Or leave it?



I think the majority here on the forums would start looking at timing tables and try to figure out a way to prevent it from happening, myself included until recently.

Now I am leaning more to letting the ECU deal with those infrequent and out of the ordinary scenarios. Next question, for me personally, is if I think this is a good enough solution or if I want to spend 1000$ on Ecutek just to solve this one issue, which might not be much of an issue at all.

P.s.
I also have one stock log myself from before I switched to stg 1, but it doesn't have the mentioned examples. Also, it was done at 35 deg c ambient and 40+ deg c IAT. And the fuel used is advertised as minimum 100 octane (I think it's 102, at least it doesn't knock more or less than another brand that is advertised as 102):
https://datazap.me/u/tor/stock-a00g-...ta=15-19-26-27

I regret not having logged thoroughly before switching header. It would be quite fun to flash a stock tune, modified with Ztan's o2 sensor scaling so we can see what's going on.

Last edited by Tor; 12-19-2017 at 09:28 PM.
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