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Old 04-16-2023, 02:12 PM   #190
toohighpsi
 
Drives: 2015 C7 Z06 M7
Join Date: Dec 2012
Location: So-Cal
Posts: 665
Quote:
Originally Posted by toohighpsi View Post
Continued use of lambda is expected, I don't know of any reason to ever turn it off. Remember that the % limits are based off the port % being used, so 20% limit is 20% of the amount of port being used (in my case 35% port). So in reality 20% is pretty small.
Correcting my previous post, when you allow 20% correction - it IS 20% of full required fuel flow (DI + PI), when you apply the correction to the fueling to reduce your error you need to add fuel to either delivery system or both in the amount need to achieve the error.

So for example if you're running say 40% port and the Lambda Correction % you're trying to fix is 5% you need 5% more total fuel at that point.

If you have enough margin in your DI to add 5%, then you can just add 5% to BOTH your DI and PI flows values at that point.

If you want to add it with PORT only, you'll need to add:
5% + (5% x 60% / 40%) or whatever your DI/PI ratio is = 12.5% fueling to PORT ONLY to fix your Lambda error.

Actual calculation is 0.05 + (0.05 * 60/40) = 0.125

Sorry for that incorrect statement on my previous post (which I'll edit out), sometimes just too many numbers rattling around in my head...
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2015 Corvette Z06 M7
2021 Porsche GT4 M6
2023 Corvette Z51

Last edited by toohighpsi; 04-16-2023 at 10:21 PM.
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