01 Z28 6.0 TH400 4500 Stall E85 Siemens 80# 78/75 tune

[99CamaroSS]

01 Z28 6.0 243 Heads LS6 Intake 230/236 Isky Nitrous Cam TH400 4500 Stall E85 Siemens 80# 78/75 tune Still 2 Bar at 6# to start SD Tune

Does anyone have a base tune I can peek at for reference to above?

Thanks!

[kevin87turbot]

Here's one that I did a few months ago for a 2001 Silverado 5.3L with the same 411 PCM that you have. It had two small turbos and some 75 lb/hr decaps.

2001 JOEL TWINSwith75injectorsbase.hpt

[99CamaroSS]

Thanks! stock 5.3 minus turbos and injectors?

[kevin87turbot]

Stock 5.3L, but had Sloppy Stage 2 cam and correct valvesprings.

[99CamaroSS]

Awesome thanks!. What kind of boost were you running and how did it turn out? Another question on the vehicle when I plug in it doesn't have the option to enable 2 bar in the OS how do I verify that it might have been applied previously? The car was running an SD Nitrous tune when purchased.

[kevin87turbot]

Click on the Calibration Details icon on the Editor toolbar and see what the current Operating System is. A custom OS may have already been applied.
If that's the case, you'd have to do a write entire to restore the original OS.

[99CamaroSS]

Click on the Calibration Details icon on the Editor toolbar and see what the current Operating System is. A custom OS may have already been applied.
If that's the case, you'd have to do a write entire to restore the original OS.

Thank you

[99CamaroSS]

Click on the Calibration Details icon on the Editor toolbar and see what the current Operating System is. A custom OS may have already been applied.
If that's the case, you'd have to do a write entire to restore the original OS.

so when I was comparing your file you linked me to this I am understanding most but I don't know why he doesn't have an option in the OS to enable 2 bar. The car was previously tuned on nitrous and I don't have the original file. Here is his file with a few adjustments from yours.

Calibration details are blank it says OS 2020005

[kevin87turbot]

Yours already has a custom OS applied to it. Looks like an EFI Live OS. It has a separate fuel table for boost, and a separate spark modifier table for boost. It should work fine in your application, but it'll just be different than the one tune that I posted.

If you'd prefer to convert it to an HP Tuners based 2 bar OS, you'll just have to license a stock file and do a Write Entire, then start from scratch.

[99CamaroSS]

Yours already has a custom OS applied to it. Looks like an EFI Live OS. It has a separate fuel table for boost, and a separate spark modifier table for boost. It should work fine in your application, but it'll just be different than the one tune that I posted.

If you'd prefer to convert it to an HP Tuners based 2 bar OS, you'll just have to license a stock file and do a Write Entire, then start from scratch.

Thank you I was wondering if that wasn't the case. I am not familiar with EFI Live. I was just curious how the extra VE table for boost works. Can you take a peak at my Main and Boost VE tables if you have time?

[kevin87turbot]

It will transition into the boost VE table when it exceeds 105 kPa. Your Primary VE table is set with some pretty large numbers at the 90-105 kPa range. You can review my tune for an idea of the values at 100 kPa...typically 90-100 is about right. Yours goes up to 131. I'd adjust that, then you can can focus on the boost table. It's zero'd out at this time.

[99CamaroSS]

Thank you that makes sense! How does this look?

[kevin87turbot]

Those numbers look more appropriate to start with.

Be sure to force it to SD mode by changing P0101, 102, and 103 to MIL on First Error.

[99CamaroSS]

Thank you

[99CamaroSS]

It won?t idle if I set the map parameters to 200 do I need to keep it at 100 since it has a boost table?

[kevin87turbot]

The MAP sensor Linear and Offset values are solely dictated by whatever MAP sensor you are running. Do you know the part number for your MAP sensor?

[99CamaroSS]

The map is a new sensor is from a 2005 cobalt ss PN# NTK MA0097

[BigTuner]

The map is a new sensor is from a 2005 cobalt ss PN# NTK MA0097

Go on the repository and grab a stock tune for a 2005 cobalt SS or any other car that uses the same sensor and get the MAP sensor linear and offset values from there.

[99CamaroSS]

Go on the repository and grab a stock tune for a 2005 cobalt SS or any other car that uses the same sensor and get the MAP sensor linear and offset values from there.

Thanks I tried but my cable is still licensed to my buddy so I can't get into the repository.

[blindsquirrel]

The MAP shown in the Cobalt tune file is the 5-pin TMAP, the 3-pin 2-bar sensor commonly used is actually the Cobalt SS baro sensor and is not in the tune file.