Unusual idle occurance after injector replacement/IFR adjustment

[405HP_Z06]

Good info, any progress?

[hquick]

My biggest problem is I don't know enough about injectors.
The second issue I have is that there is next to nothing available in the way of info on the Bosch greentop 42lb injectors.
So...at the moment...with the help of people such as Justin....I'm just toying with my injector settings. I have noticed that the slightest changes to the voltage offset table can make you go full lean on decel without DFCO enabled.
Also...with the oddball L31 and van tune...it seems to be the only tune which utilizes table B4002. Every other tune I've looked at has that set to 1 across the board.
I've ordered a book on EFI tuning so I'll hopefully be able to get some more of this stuff to sink into my thick head.

[Goldfinger911]

I had a similar start-up problem and I solved it with changes to B3650. My V was already tuned very close to spot on and I didnt want to make changes. I am running OLSD as well. It was from a thread I read on a similar topic. Here is what my table looks like now.

1.000000
1.000000
1.000000
0.999512
0.999024
0.998047
0.996582
0.994141
0.989258
0.978516
0.960938
0.930176
0.930176
0.930176
0.930176
0.930176

[hquick]

So far I've dropped my min pulse width 50%...I don't see any differences or feel anything different in the way the vehicle drives.

[405HP_Z06]

So far I've dropped my min pulse width 50%...I don't see any differences or feel anything different in the way the vehicle drives.

Howard,
Have you done anything to {B4004}? When the commanded pulse rate is less than {B4003}, the PCM defaults to {B4004} for the minimum pulse rate.

What about {B4005}, did you change anything here?

[405HP_Z06]

My biggest problem is I don't know enough about injectors.
The second issue I have is that there is next to nothing available in the way of info on the Bosch greentop 42lb injectors.
So...at the moment...with the help of people such as Justin....I'm just toying with my injector settings. I have noticed that the slightest changes to the voltage offset table can make you go full lean on decel without DFCO enabled.
Also...with the oddball L31 and van tune...it seems to be the only tune which utilizes table B4002. Every other tune I've looked at has that set to 1 across the board.
I've ordered a book on EFI tuning so I'll hopefully be able to get some more of this stuff to sink into my thick head.

I hear you, it seems that these injectors are difficult to tune totally correct and no one is sharing the offsets, etc. I have a brand new set of these that I was going to install but decided to use the FAST/ASA/GTP 36lb's instead because the table's are available.

[hquick]

4003 & 4004 are set the same. I haven't played with 4005 at all.