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Originally Posted by Wayno
I don't know why it's compensating for the ports or directs so much, could be any number of things. Most likely is sitting in one specific cell somewhere for too long that skews the learning. Or that the PI is scaling horribly at high loads around 2000 rpm.
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Thanks a lot. I am working late shift for the next days so I'll drive the car and see give it a chance to see if it changes. With the stock A00G it did it too:
http://datazap.me/u/tor/stock-a00g-m...&zoom=450-1488
If it's scaling poorly at 2000 rpm, is that just a natural variation in the production quality of the injectors?
I understand that I that I am potentially losing some power at high rpm. But how rich does it have to be before it becomes a problem in terms of carbon deposits or fuel getting into the oil? I assume the values I have are far far away from causing such problems?
I should add the car runs great, from feeling.
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Instead of worrying so much about it, here's another solution. I'd run this as is but you can add whatever timing you want to it. The AFR will be around 11.8 and LTFT around 0.4 up to 7000 rpm where your power drops off on stock header anyway. The lack of PI at 2000 rpm might take away the ECU's ability to learn those high LTFT values above 5k/7k, but if it doesn't this will let you run correct AFR, regardless of the LTFT issue is resolved or not.
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I see that you made the following change in v98:
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v98:
- Restored 20% Port Injection > 5000 rpm in petrol tunes to prevent carbon build up on intake valves.
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The rpm scaling is different from e.g. OTS and the 20% is introduced at 7200 rpm instead of 5200. Could that influence it as well?