Quote:
Originally Posted by DJCarbine
I would datalog it but I have no intention of fouling my plugs again. I'm just telling you what I experienced.
If you want to expand on why it wouldn't max the stft and that maybe I got a bad tune your post would be helpful in the context of the thread topic
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because the difference in the amount of fuel required is less than the maximum correction allowed by the ecu. so, it'll just trim like crazy and be all over the place but you'll still see stoich afr at idle after it settles down, and if you drive around easy long enough to let the ltft settle in D, open loop will be reasonably fine. i'm not saying it's a great idea, just that 'maxing' the fuel trims would be an issue, and this doesn't happen in this case. wrx's with 15% trim caps are more likely to actually not hit targets due to density variation.
it takes a lot to convince this ecu to do something stupid.