5.3 twin turbo

[danny68ss]

its a 5.3 with two t3/t4`s 80lb injectors cos3 it runs rich when idling but when it gets into boost around 3600 it starts leaning out gauge shows 16.1 any help would be greatly appreciated here's the tune and a data log

[danny68ss]

datalog

[joecar]

Is FPR manifold-referenced or un-referenced...?
What is measured rail pressure (with FPR reference hose temporarily disconnected)...?

[danny68ss]

set at 43 raises to 53 unplugged and under boost 64

[joecar]

So FPR is set to 53 psi with reference hose unplugged...?

( an you adjust it to 58 psi (with reference unplugged)...? )

Did you use 53 psi to calcuare IFR table for "80 lb/hr @ 43 psi" injectors...?

[danny68ss]

No i used 58

[joecar]

So FPR is set to 53 psi and IFR in tune uses 59 psi...?

[danny68ss]

I had it on 58 i turned it down to see if it would lean out the idel

[joecar]

Post log file of idle.

[danny68ss]

I put the right numbers in for the ifr for the pressure im running its idles and cruises abut 11.5 to 12 afr I cant figure why it doesn't run the commanded afr"s

[limited cv8r]

Have you tried taking fuel out of the tune and see if your injector pulse width reduces or stays the same. 2.xxx ms may just be too much fuel with 80lb injectors.

[danny68ss]

Looks to be staying the same

[limited cv8r]

There are a few threads with people having similar ,I think a cax was needed for a minimum pulse width table.

[danny68ss]

Would reducing b4005 shorten injector pulse with at idle and cruise

[limited cv8r]

You can try,but I believe without the missing min injector pulse width table if it is in your tune,you will never get below this value. Try doing a search on B9021.

[danny68ss]

Says not found it has a min injector pulse width its all set at 1.00533

[limited cv8r]

I meant search the forum

[danny68ss]

how can I add that t0 my os 0407303

[joecar]

its a 5.3 with two t3/t4`s 80lb injectors cos3 it runs rich when idling but when it gets into boost around 3600 it starts leaning out gauge shows 16.1 any help would be greatly appreciated here's the tune and a data log

datalog
Looking at your log, MAP does not exceed 103 kPa... (so either you have no boost or you have the wrong MAP sensor)

this means that your operating point is staying on the Main VE table and not going into the Boost VE table.

[joecar]

how can I add that t0 my os 0407303What was the OEM OS id for this COS...?

[danny68ss]

os 12587603 the map sensor is a 12614973 for supercharged cobalt but when I put the 2 bar values in for a 2bar it floods it out

[joecar]

os 12587603 the map sensor is a 12614973 for supercharged cobalt but when I put the 2 bar values in for a 2bar it floods it outThen there's various other problems...

what does MAP pid show with key-on engine-off...?

[danny68ss]

Any hope for ill get that when i get home and back on my laptop

[danny68ss]

14.5 if im looking at the right thing map sae pid

[danny68ss]

it was wrong map sensor I've worked on the tune following your advice its running much better now not leaning out under boost thank you for pointing me in the right direction here is the tune now and a data log

[joecar]

14.5 if im looking at the right thing map sae pidSet the scantool units to metric...

so 14.5 psi would be 100 kPa (much easier)... :)

[danny68ss]

Do you see any reason i cant get it to idle and cruise leaner than 12.1 afr

[joecar]

Do you see any reason i cant get it to idle and cruise leaner than 12.1 afr

Log shows commanded AFR 14.17 in CL which matches B3601 in your tune...

are you seeing AFR 12.1 on your wideband...? I don't see any logged wideband data in your log file.

[danny68ss]

Yes that is what it shows

[joecar]

Since you're running SD (MAF-less), your VE table is not correct

also note that you have LTFT disabled but CL is still enabled... you have to set B4205 to 284F to disable CL

( otherwise it will run CL but without applying LTFT since you have LTFT Correction disable (B3801) ).

[joecar]

Other problems:
- the 105 kPa columns of B0101 and A0009 are not identical.
- HO/LO spprk timing tables have a little too much advance for boost.

[danny68ss]

Ok I'll take care of that.If i lower the ve table that will lean it out ?

[danny68ss]

I added the b9021 cax now it shows the commanded afr is way off what I have what have I done wrong

[joecar]

I don't see where commanded AFR is coming from...

can you delete the pid GM.AFR and add the pid GM.EQIVRATIO and relog...


BTW (not related): B3608 is set to 60 seconds... you would want to zero this.

[danny68ss]

could I have used the wrong cax and caused my problem ipw was 1.7 range before I put the b9021 in

[joecar]

Also:
- B0101 does not look right.
- B3647 can be made flatter, see below:


B3647:
set it to EQR 1.00 all across up to the 80kPa column, and from 80kPa column start ramping up to say EQR 1.20 in the 105kPa column...
set B3613 PE MAP Threshold to 105 kPa (and use B3618 PE for boost fueling).

[danny68ss]

idle log

[danny68ss]

lc-2 is showing 11.2

[Taz]

could I have used the wrong cax and caused my problem ipw was 1.7 range before I put the b9021 in

You certainly did ... where did you get the *.cax file from ? What OS was it supposed to be used with ?

When you first applied the *.cax file yesterday, the value displayed (supposedly the minimum injector pulse width) was 56.779728 milliseconds. This value should have been around 1 millisecond. This should have indicated to you that the *.cax file was targeting an incorrect section of the binary code.

But you changed this to 0.896682, and then changed it again to slightly less.

The actual B9021 value in your tune is unchanged from stock (0.881484 milliseconds).

I would recommend that you change your incorrect B9021 parameter back to its original value (56.779728) - then delete the *.cax file.

You got lucky that it was not a critical parameter that you mistakenly changed ...

[danny68ss]

cax came from here but it was for 125003 thought it might work but I was wrong mine is 0407303. So the b9021 it is showing doesn't work?

[Taz]

cax came from here but it was for 125003 thought it might work but I was wrong mine is 0407303. So the b9021 it is showing doesn't work?

Tuning software interface protocols, as well as any corresponding *.cax files, are Operating System specific.

You are using COS 04073003, which is based on 2004 OS 12587603. This is intended for use with 1 Mb PCM loaded with a 2004 model year OS.

COS 01250003 is based on 2001 OS 12202088. This is intended for use with a 512 Kb PCM loaded with a 2001 model year OS.

The data relevant to Minimum Injector Pulse Width is stored at different addresses (different physical locations on the flash chip) with respect to different Operating Systems (OS).

CAX files are designed to be used with the OS which these were created for - the data addresses are not universal.

Renaming the *.cax file from 01250003 to 04073003 was a significant mistake. It is only by the kindness of random chance that you did not destroy your PCM.

[danny68ss]

Is there a cax for my os

[joecar]

Taz, should he full flash his previous (pre-cax) file in...?

[joecar]

...

can you delete the pid GM.AFR and add the pid GM.EQIVRATIO and relog...

...
I'm trying to locate the source of your commanded fueling (let's use EQR rather than AFR)(BTW: what fuel are you running...?)...

and I think VE does not look right, how was VE arrived at...?

[danny68ss]

Just 93 octane gas it was the stock ve but i started reducing it trying to lean it out

[danny68ss]

Do i need to remove that cax and do i just delete it

[Taz]

Taz, should he full flash his previous (pre-cax) file in...?

That is probably the best course of action ... always glad that you are smart enough for the both of us, my internet friend !

[Taz]

Do i need to remove that cax and do i just delete it

Go to ... C:\Program Files (x86)\EFILive\V7.5\Calibrations ... in that folder find the file named "04073003.cax" and then delete it.

And then do as Joecar suggested ... reflash with a known "good" file.

[danny68ss]

Ok will do

[5.7ute]

look at post 17 here https://forum.efilive.com/showthread.php?17699-need-B9021-for-01250003/page2

[danny68ss]

Ok thanks

[danny68ss]

Pcm died anyway of recovering it or is it junk and how do i make sure it doesn't lock up my new one

[danny68ss]

I deleted the cax uninstalled efilive reloaded it put in a program that never had the cax in it am i safe now

[5.7ute]

As long as you flashed back in the tune file from before you modified it with the incorrect cax file, you should be fine.

[danny68ss]

I used the first one i uploaded here to make sure it was before i heard about the cax the car was running fine driving down the road and it just shut off and i can't get into the pcm i assume that the cax was the cause but i had already deleted it and loaded a different tune in it

[joecar]

ALSO DO THIS:


Go to ... C:\Program Files (x86)\EFILive\V7.5\Calibrations ... in that folder find the file named "04073003.cax" and then delete it.

...

( no need to uninstall/re-install V7 )

[joecar]

DID YOU DO THIS:

full flash a good tune file (from before the cax)...?

[joecar]

Is the PCM good now...?

[danny68ss]

I did that too before and loaded a tune without the cax but. It may have already done the damage

[danny68ss]

No i had a extra and bought another licence