Disabling Post injection on LBZ

[LBZoom]

Hello everyone,
I've read on this forum that you can disable the post injection cycle to increase fuel efficiency and that it is only in place for emissions purposes... I've messed around with it, but I was curious, should I be setting the table values to 0 or setting them to the minimum amount possible? I assume that if I set them to 0 it will disable it...same thing for disabling the EGR for a blocker plate right? Thanks guys!

[GMPX]

Nothing to worry about on the LBZ, the 'post' injection is only used with the LMM, did you mean pilot injection?, LBZ has that.

Cheers,
Ross

[dynarex]

gm told me the post inj event is used on the l bz
and i also know when i dis abled it the egt did go down a little
its only used for soot control on the lbz and dpf on the lmm
this is from a duramax ecm calibrator (my cousin)

[LBZoom]

Okay, I guess I was a little confused because there is a table in my ecm for post injections 1 and 2...1 has no values entered in the table, 2 however has values entered in the table which made me think that they were in use. I'll take your word on it Ross because I know you're the man! Hypothetically though if it was in use, would entering a value of zero prevent the cycle from occuring?

[GMPX]

Don't take my word on that 100%!, I am basing it on the fact I've never seen a log file where the post appears to ever be active, more than happy to be shown otherwise.

[dynarex]

Okay, I guess I was a little confused because there is a table in my ecm for post injections 1 and 2...1 has no values entered in the table, 2 however has values entered in the table which made me think that they were in use. I'll take your word on it Ross because I know you're the man! Hypothetically though if it was in use, would entering a value of zero prevent the cycle from occuring?

to answer the question-yes set them all to 0-will disable it
also note the egt drop at part throttle driving

[The Neens]

to answer the question-yes set them all to 0-will disable it
also note the egt drop at part throttle driving

dynarex has proven this for us...I did it, you can do so at your own risk...

[tinman22]

I can confirm dynarex's findings as I have done this as well.

[Donovan]

I did it, you can do so at your own risk...

What is the risk? I have been running like this for over a year with no problems.

[The Neens]

What is the risk? I have been running like this for over a year with no problems.

I haven't had any problems either...Anytime we modify our vehicles, we're taking a risk, that's all I meant