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Old 03-27-2020, 10:45 PM   #1
solidsnake11
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How to lower direct pulse width below .88

I'm running port injectors with the direct driver on a k24 and having trouble getting it to lower than .88 usec vvt is enabled now.
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Old 03-28-2020, 08:55 PM   #2
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I'm running port injectors with the direct driver on a k24 and having trouble getting it to lower than .88 usec vvt is enabled now.

From memory in ecutek there are some tables for DI max and min delivery quantities


Its under injection control



Not sure in romraider defs
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Old 03-28-2020, 09:12 PM   #3
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From memory in ecutek there are some tables for DI max and min delivery quantities


Not sure in romraider defs
I changed those, got it down from 1 to .88. I finally got ecutek.

Spent today working on the house roof and the k24 AC. I will try some more tomorrow, may have to get some smaller injectors.

After it starts and idles for about 30sec it switches to direct at idle even though the injector ratio is 100 port

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Old 03-29-2020, 12:34 AM   #4
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I changed those, got it down from 1 to .88. I finally got ecutek.

Spent today working on the house roof and the k24 AC. I will try some more tomorrow, may have to get some smaller injectors.

After it starts and idles for about 30sec it switches to direct at idle even though the injector ratio is 100 port

Ok maybe try dropping the di pressure target tables say take 30% out of them
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Old 03-29-2020, 03:44 PM   #5
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Ok maybe try dropping the di pressure target tables say take 30% out of them
They seem to only run the rail pressure and then the rail pressure sensor feeds the ecu. It stuck at 7.3 us in ecutek at idle. I can turn the ac on and adjust stft with the compensation maps but at idle (no ac) it will not go under 7.3

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Old 03-29-2020, 03:45 PM   #6
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I may have to replace my spoofed di injectors with smaller ones

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Old 03-29-2020, 04:49 PM   #7
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Success sort of I got it to lower in ecutek down to 5 but it didn't change the AFR so its probably in the injector driver. I'm assuming a direct injector's dead time is very high compared to port injectors which is causing the problem. I searched for info on DI dead time but didnt come up with anything.

Time to order injectors.

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Old 03-30-2020, 12:33 AM   #8
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Decapped ls7, ls3 injectors from the info I can find are 1250cc
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