Bought tune

[thickcajun]

18509Hey guys does someone care to take a look at my tune? This is for a 03 Silverado SS
Mods
76mm Turbo
42 FoMoCo injectors
Intank 370LPH feeding -8 lines Aeromotive adjustable regulator set at 58#
Edelbrock Pro-Flow with LS3 90mm TB X-link
Installed this kit last week and finished up at 3:30am Sunday morning...When i loaded the tune the truck would start but not stay running. While i tried to log all i kept seeing was the the Commanded AFR was around 11.87. I 'm just now getting comfortable enough to play with the trans settings and modifying the PE but this is little over my head. Thank you for any input, i forwarded the tune back to the tuner by email and just haven't heard a response yet.

[400ss]

18509Hey guys does someone care to take a look at my tune? This is for a 03 Silverado SS
Mods
76mm Turbo
42 FoMoCo injectors
Intank 370LPH feeding -8 lines Aeromotive adjustable regulator set at 58#
Edelbrock Pro-Flow with LS3 90mm TB X-link
Installed this kit last week and finished up at 3:30am Sunday morning...When i loaded the tune the truck would start but not stay running. While i tried to log all i kept seeing was the the Commanded AFR was around 11.87. I 'm just now getting comfortable enough to play with the trans settings and modifying the PE but this is little over my head. Thank you for any input, i forwarded the tune back to the tuner by email and just haven't heard a response yet.

Does it has stock engine? LS2? the regulator has vacuum signal? i think the best you can do, get a wideband if you donthave one already, and search here you will find all the info, and correct the VE tables by yourself, you will learn a lot, slowly , im learning too, but i have tuned like 4 speed density boosted cars and it isnt really really hard,, just slowly, there are a lot of litle details that you have to check, then, log, correct, log, correct, log. correct,, and ask for help here, and youll be ok

[thickcajun]

Does it has stock engine? LS2?

Stock ls1 with upgraded valve train springs and push rods...

[joecar]

When you set the FPR at 58 psi, did you do so with the boost/vacuum reference hose removed from the FPR...?

[thickcajun]

When you set the FPR at 58 psi, did you do so with the boost/vacuum reference hose removed from the FPR...?

Yes sir removed..

[Tre-Cool]

I reakon u should copy the low spark map to the high to begin with as the high map is far too high imo.

A0008 is too high also. start at around 1.08 at 0 degrees c then smooth it down to operating temp

[thickcajun]

18521
Okay i backed up and went through the COS tutorial and followed all the steps. I did copy the low spark map over to the high map just to stay safe...It worked no knock retard while i was driving last night..I think the only thing i copied over from the bought tune was the Throttle Body Effective area number..I email One 3 and got a copy of the injector data to work on that today...This is a real challenge ive been reading up on all this for the better part of 6 months...When i actually seen the history of what all the tuner changed kinda humbled me some...

[LastCall]

How did it run when you were driving?

[thickcajun]

How did it run when you were driving?

It drove but didn't like the boost... I've contacted another tuner to look at everything... The original tune was missing some of the maf killers in the engine diagnostics... After that was fixed she runs great..

[C450]

I'm new so I have to ask what MAF killers you're talking about. I'm having an issue as well and I'm trying to find out what I'm missing. I bought a tune as well that isn't working.

[thickcajun]

I'm new so I have to ask what MAF killers you're talking about. I'm having an issue as well and I'm trying to find out what I'm missing. I bought a tune as well that isn't working.

There are areas of the maf that are in engine calibrations and in the engine diagnostics in two places... He just killed the calibration side but did not set no mil in the diagnostics... Hope that makes sense

[C450]

There are areas of the maf that are in engine calibrations and in the engine diagnostics in two places... He just killed the calibration side but did not set no mil in the diagnostics... Hope that makes sense

Yes thank you. It does make sense. Maybe I'm misreading his comment. I understood it as he had the MAF calibration set to 0 but it was still throwing a MAF code? That's an issue I've noticed with mine. P0101 would pop up but I have my MAF set to 0. So I'm thinking I've misunderstood but he said after the MAF killers were taken care of, it took care of his issue.

[thickcajun]

Yes thank you. It does make sense. Maybe I'm misreading his comment. I understood it as he had the MAF calibration set to 0 but it was still throwing a MAF code? That's an issue I've noticed with mine. P0101 would pop up but I have my MAF set to 0. So I'm thinking I've misunderstood but he said after the MAF killers were taken care of, it took care of his issue.

Look at efi cos documentation.. They tell you how to fail the maf correctly..

[joecar]

If you want to run MAF-less then a MAF DTC must trigger (immediately)...

if you don't have a MAF DTC then the MAF is being used (if the MAF is zero or not present, the PCM calculates what it should be and tries to use that (which many times is wrong)).

Also note that when MAG DTC is present running COS, the COS still runs adaptive spark (HO/LO sliding).

[thickcajun]

If you want to run MAF-less then a MAF DTC must trigger (immediately)...

if you don't have a MAF DTC then the MAF is being used (if the MAF is zero or not present, the PCM calculates what it should be and tries to use that (which many times is wrong)).

Also note that when MAG DTC is present running COS, the COS still runs adaptive spark (HO/LO sliding).

Okay so killing it the way the tutorial is wrong... Not sure I follow where your coming from.

[joecar]

Okay so killing it the way the tutorial is wrong... Not sure I follow where your coming from.Which tutorial...?

Doesn't the tutorial have you cause the MAF to fail...? And then it does not really matter if the MIL illuminates (table C6002 ), but it matters that the DTC is not ignored (table C6001) but rather acted upon immediately.

I'm making sure you see a MAF DTC when you scan (if you see one, then VE is being used, otherwise MAF is being attempted being used).

[thickcajun]

http://images.tapatalk-cdn.com/15/06/19/6bbc178ec364f3938c28010694757a7e.jpg
Here's what I went by..

[joecar]

In your tune file12-31-14 COS3_0001.ctz (https://forum.efilive.com/attachment.php?attachmentid=18521&d=1434539605) take care of these:

- A0001, A0002 are out-of-range, there is a trick to getting these in range (search forum for "OOR").
- you setup B3647 and B3649 using Lambda rather than EQR, it goes very lean above 90kPa...
you have to change units to EQR, restart tunetool, and redo B3647 and B4649.
- A0009 does not flow from B0101 (the 105kPa columns differ, VE steps up as you transition from B0101 to A0009).
- set B3609 to 0.001s.
- set B3613 to 105 kPa... this allows you to PE table B3618 to control boost commanded EQR.
- set B3616 to something like the 2002 Camaro's B3616.
- at low rpm, your HO/LO spark tables are too retarded, you can run some advance there.
- you can increase trans shift pressure tables, expecially down low.
- you can decrease trans desired shift time tables.
- you can decrease trans shift torque reduction tables a little.
- your WOT downshift MPH must be lower than the upshift MPH by at least 5 mph.
- set the throttle kickdown tables to 100% to let the PT upshift/downshift tables work correctly.


During tuning, be aware that the COS does STFT trimming during OL on any cell in B3647 or B3649 that is stoich (i.e. 1)... this mode happens to be called Semi-Open Loop (SOL).


So you're going to run CLSD, correct...?


Is your FPR manifold referenced...?
Did you measure rail pressure (with reference hose temporarily removed)...?
Did you adjust B4001 for the measured rail pressure...?

[joecar]

The tutorial is correct.





http://images.tapatalk-cdn.com/15/06/19/6bbc178ec364f3938c28010694757a7e.jpg
Here's what I went by..

[thickcajun]

The tutorial is correct.

Cool... I will go back and look at all the things you pointed out... Thanks for the input I appreciate your time and effort to educate.

[joecar]

Tutorial is correct...

when you start engine, check that a MAF DTC is immediately present (use scantool).

[thickcajun]

In your tune file12-31-14 COS3_0001.ctz (https://forum.efilive.com/attachment.php?attachmentid=18521&d=1434539605) take care of these:

- A0001, A0002 are out-of-range, there is a trick to getting these in range (search forum for "OOR").
- you setup B3647 and B3649 using Lambda rather than EQR, it goes very lean above 90kPa...
you have to change units to EQR, restart tunetool, and redo B3647 and B4649.
- A0009 does not flow from B0101 (the 105kPa columns differ, VE steps up as you transition from B0101 to A0009).
- set B3609 to 0.001s.
- set B3613 to 105 kPa... this allows you to PE table B3618 to control boost commanded EQR.
- set B3616 to something like the 2002 Camaro's B3616.
- at low rpm, your HO/LO spark tables are too retarded, you can run some advance there.
- you can increase trans shift pressure tables, expecially down low.
- you can decrease trans desired shift time tables.
- you can decrease trans shift torque reduction tables a little.
- your WOT downshift MPH must be lower than the upshift MPH by at least 5 mph.
- set the throttle kickdown tables to 100% to let the PT upshift/downshift tables work correctly.


During tuning, be aware that the COS does STFT trimming during OL on any cell in B3647 or B3649 that is stoich (i.e. 1)... this mode happens to be called Semi-Open Loop (SOL).


So you're going to run CLSD, correct...?
Yes


Is your FPR manifold referenced...?
Yes

Did you measure rail pressure (with reference hose temporarily removed)...?
Yes

Did you adjust B4001 for the measured rail pressure...?

That's the injector flow rate correct? If so yes.

[thickcajun]

Tutorial is correct...

when you start engine, check that a MAF DTC is immediately present (use scantool).

There is no maf DTC when I scan...

[thickcajun]

Just to clarify I'm using the cos tune in the original post only updated the maf settings to get it to start... Sorry for the confusion...

[thickcajun]

http://images.tapatalk-cdn.com/15/06/19/7967a3c5ef35ba337a5fcd25aa8ebe1d.jpg
Sorry your right p0102 shows right up

[joecar]

Sorry your right p0102 shows right upOk, that means VE is being used exclusively.