semi-closed loop or full closed loop

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10-13-2008, 10:26 AM

#21

BlackGMC

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Quote:

Originally Posted by 53RUSSELL

Most you guys are running semi-closed loop then?
Well ran full closed loop to work toaday and the LFTS looks good. Only thing i don't like is when you go into boost takes few seconds's for tha a/f to drop.

Quote:

Originally Posted by thunder550

I think there's a PE mode delay timer setting in there somewhere. Make sure that's set to zero.

you have your PE Commanded Step B3643 size set to high... According to what you have it set .02 it will take several step to get to the commanded AFR once PE is enabled... Set that value to 1.0 and you will get there in 1 step (instant)..

For example

Quote:

If your current commanded EQ ratio is 1.0 and your target is 1.25, if you have a step size of 0.01, it will take 25 steps to go from 1.0 to 1.25. According to the description, there are approx 20 steps a second, so it would take more than a full second to reach target.

With a step size of 1.0, it will hit target with the first step.