Thread: lean idle

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2013-05-26 13:18:40

mekitch

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lean idle

Hi,
please what injection time should be at idle with 370cc at 4 bars? I am getting 1.8ms while Innovate LC1 sais 19AFR.... cruise is ok at 14.7 ... or I can do fuel map or K value adjustment to read 2.2ms when lc1 reads 14,7.. Is the Lc1 reading correct?

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2013-05-26 16:53:47

gomba

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Originally Posted by mekitch

what's your injector latency on your tune? 1.8ms? That seems quite high. I think 370cc should be more like .70ms

Last edited by gomba on 2013-05-26 at 16-55-03.

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2013-05-26 18:30:08

mekitch

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injector latency? is stock..600uS / 0x3C ..
0.7ms injector pulsewidth at idle at 800rpm??

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2013-05-27 04:59:12

gomba

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Originally Posted by mekitch

injector latency? is stock..600uS / 0x3C ..
0.7ms injector pulsewidth at idle at 800rpm??

bump up your injector latency to 750uS and see if your idle gets richer/better. It should.

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2013-05-27 20:15:25

mekitch

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yes it helps.. moves from afr20 to 18

i have nistune type4 and euro 1996 p11 ecu and cant get it right. I cant find the right K value to have it okay on cruise and idle together.. I have NO vac/boost leaks, just some exhaust leaks (visible here

)

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2013-05-27 21:48:27

Haulin200sx Online/offline status of Haulin200sx is unknown

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Just add more fuel in the idle cells! that's the easiest way or you can bump the VQ values up where you idling (maf voltage at idle) just make sure you taper the numbers back in/smoothing

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2013-05-27 22:30:07

mekitch

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Originally Posted by Haulin200sx

Just add more fuel in the idle cells! that's the easiest way or you can bump the VQ values up where you idling (maf voltage at idle) just make sure you taper the numbers back in/smoothing

yes, both of theese two things works, but is this the correct way?

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2013-05-27 23:26:52

gomba

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I'd try 850uS for inj latency and then mess with the idle cells.

Also, your exhaust leak is after the wideband sensor right? Otherwise you will see it a little leaner I'd assume.

-G

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