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Not sure if there is an increase in mileage, there is more smoke when you come on it, but EGTS are lower so that might help you when you are doing long hard pulls.

General Concenus is yes, if you have a 6 spd the only way I know of is to reflash the stock TCM and there is a Tab that says TAPS and you just select reset TAPS.

Thanks i will have a look.

I tried logging for the first time today to see what is going on. I was sucsesfull in the point of getting some data but not sure if I logged what I wanted to?

What do you guys normally log for...

Thanks, thats what i have been doing I just noticed everybody seems to have a newer version of software in their vehicles. The stealership arond here is not to cooperative, so i am waiting to see if...

Thanks Cougar, Sorry about the rant but Boy did i pick the wrong week to quit smoking!

The custom operating system I wanted to load was the latest GM OS I believe it was 638 or something like...

Alright I am new to this but trying to get up to speed. I have made some changes to the calibrations in my truck and uploaded that went relatively well but,


I am unable to load a custom...

Thanks again Jody, My logic was that the Map Bosch has laid out works so why play with it? But the timing is more then likely retarded in order to keep NoX emmisions down.

I don't mind playing and...

Thanks Jody, now that brings up some more questions.

If you were to say increase the main injection timing 2 degrees do you also have to increase the pilot?
Would you also increase every table...

I looked at the timing map on the LBZ and it is pretty complicated? Not many people seem to play with the timing, is there a reason? I have heard that most LBZ's only use table A but in EFI Live says...

Dale thanks for the help, I have a version 2 just bought it a couple of weeks ago so I am still pretty green. I think I will steer clear of the OS change for know until I am more familiar with the...

I have EFI Live V7.5.3 I have dowloaded two stock tunes with OS 12606128. Is there anything special when you upload an OS? The help section talks about a whole bunch of things but they appear to be...

I have EFI Live V7.5.3 I have dowloaded two stock tunes with OS 12606128. Is there anything special when you upload an OS? The help section talks about a whole bunch of things but they appear to be...

The OS button seems to be blanked out on my EFI Live so I am assuming I don't have an operating system or i am doing something wrong? I can find all kinds of tunes but no OS's?

Sorry if i wasn't clear, but does operating system come with the stock Tune? I have a link to several stock tunes so if I understand correctly if I download a stock tune for my truck with a upgraded...

Should I get them done?Or is the Stealership going to screw it up?
How does it affect the custom programing in the ECM, do you have to reflash?
What happens if the OS is not the same when you...

What is the operating system? I have 12604138 but see alot of 12606128? how do you get the new OS i assume its through the dealer? are they free? do they make a difference?

I purchased and loaded EFI live last week everything ran fine tonight i try to open EFI Live and shortcut cannot find target message comes up? I can't find it either? so i tried to install it again...

How do you reset TAPS?
Does reseting TAPS engage Fast Learn?
Does reseting the TAPS also reset Defuel?
How do we limit Defuel? I am getting a hard Defuel between 3rd and 4th.

Thanks in...

Thanks Guys, and sorry the truck is a 2006 LBZ so I don't think I have a DPF. Are the Tables B9301 and B9302? Post injection # 1 is already at zero. Do we just type into the table and save?

I just recieved my EFI Live and just starting to play with it and have some questions regarding the post injection.


What does post injection actually do?
Is it strictly emmisions?
How much...

I have done some research on EGR and the general concenus out there is that if you turn EGR off that EGT's will actually climb? The argument is that you have more oxygen and higher cylinder temps due...

What is the normal operating temp of the LBZ? Mine seems to sit at 175 when cruisning on the highway 60-70mph or driving around town. if i do 70+ it seems to climb up to 210? the winter fronts are on...

That is what the dealer told me two weekes ago. the mil light came back on and its responding the same way. I ordered EFI Live on Wednesday and have not recieved it yet to verify.

I have a similiar problem on a 2006 sets P0700 and U0100. reset the codes and its fine for about two weeks. Checked power and grounds at the TCM found the Transmission connector at the back of the...