Looking for tune file for LT1 1996 conversion to LS PCM

**In-Tech** · 11-05-2023

The X/Y isn't the same as the '0411 but this might help you extrapolate.

1996 Impala LT1 MAF Transfer function

Code:

    MAF Sensor Calibration Table
 
  Hz    gm/sec
   1488   1.89 
   1616   2.20 
   1744   2.55 
   1872   2.96 
   2000   3.40 
   2128   3.89 
   2256   4.44 
   2384   5.03 
   2512   5.69 
   2640   6.40 
   2768   7.15 
   2896   7.95 
   3024   8.80 
   3152   9.73 
   3280  10.73 
   3408  11.80 
   3536  12.95 
   3664  14.17 
   3792  15.49 
   3920  16.91 
   4048  18.44 
   4176  20.05 
   4304  21.74 
   4432  23.51 
   4560  25.36 
   4688  27.30 
   4816  29.32 
   4944  31.43 
   5072  33.62 
   5200  35.90 
   5328  38.30 
   5456  40.83 
   5584  43.49 
   5712  46.29 
   5840  49.23 
   5968  52.34 
   6096  55.61 
   6224  59.09 
   6352  62.72 
   6480  66.52 
   6608  70.48 
   6736  74.59 
   6864  78.85 
   6992  83.27 
   7120  87.85 
   7248  92.58 
   7376  97.45 
   7504 102.48 
   7632 107.66 
   7760 112.97 
   7888 118.44 
   8016 124.07 
   8144 129.86 
   8272 135.82 
   8400 141.95 
   8528 148.26 
   8656 154.73 
   8784 161.42 
   8912 168.33 
   9040 175.40 
   9168 182.82 
   9296 190.52 
   9424 198.49 
   9552 206.75 
   9680 215.30 
   9808 224.16 
   9936 233.34 
  10064 242.82 
  10192 252.63 
  10320 262.77 
  10448 273.23 
  10576 284.04 
  10704 295.18 
  10832 306.66 
  10960 318.48 
  11088 330.64 
  11216 343.14

1996 Vette MAF Transfer function

Code:

    MAF Sensor Calibration Table
 
  Hz    gm/sec
   1488   2.44 
   1616   2.86 
   1744   3.30 
   1872   3.80 
   2000   4.36 
   2128   4.99 
   2256   5.70 
   2384   6.47 
   2512   7.30 
   2640   8.20 
   2768   9.16 
   2896  10.19 
   3024  11.30 
   3152  12.48 
   3280  13.73 
   3408  15.09 
   3536  16.54 
   3664  18.11 
   3792  19.80 
   3920  21.59 
   4048  23.52 
   4176  25.55 
   4304  27.69 
   4432  29.94 
   4560  32.28 
   4688  34.69 
   4816  37.25 
   4944  39.91 
   5072  42.69 
   5200  45.58 
   5328  48.63 
   5456  51.83 
   5584  55.20 
   5712  58.77 
   5840  62.52 
   5968  66.47 
   6096  70.62 
   6224  74.96 
   6352  79.52 
   6480  84.27 
   6608  89.23 
   6736  94.41 
   6864  99.80 
   6992 105.41 
   7120 111.23 
   7248 117.27 
   7376 123.52 
   7504 129.98 
   7632 136.66 
   7760 143.54 
   7888 150.60 
   8016 157.89 
   8144 165.39 
   8272 173.11 
   8400 181.01 
   8528 189.24 
   8656 197.90 
   8784 206.75 
   8912 215.86 
   9040 225.23 
   9168 234.88 
   9296 244.77 
   9424 254.94 
   9552 265.36 
   9680 276.05 
   9808 286.99 
   9936 298.20 
  10064 309.66 
  10192 321.39 
  10320 333.38 
  10448 345.63 
  10576 358.13 
  10704 370.89 
  10832 383.91 
  10960 397.19 
  11088 410.73 
  11216 424.52

**drptop70ss** · 11-05-2023

Thanks, my engine is from an F body but I would think the numbers would be the same as the vette. The B body uses a different smaller MAF sensor than the F body, at least it does on the 94/95s that I have had.

Originally Posted by In-Tech

The X/Y isn't the same as the '0411 but this might help you extrapolate.

1996 Impala LT1 MAF Transfer function

Code:

    MAF Sensor Calibration Table
 
  Hz    gm/sec
   1488   1.89 
   1616   2.20 
   1744   2.55 
   1872   2.96 
   2000   3.40 
   2128   3.89 
   2256   4.44 
   2384   5.03 
   2512   5.69 
   2640   6.40 
   2768   7.15 
   2896   7.95 
   3024   8.80 
   3152   9.73 
   3280  10.73 
   3408  11.80 
   3536  12.95 
   3664  14.17 
   3792  15.49 
   3920  16.91 
   4048  18.44 
   4176  20.05 
   4304  21.74 
   4432  23.51 
   4560  25.36 
   4688  27.30 
   4816  29.32 
   4944  31.43 
   5072  33.62 
   5200  35.90 
   5328  38.30 
   5456  40.83 
   5584  43.49 
   5712  46.29 
   5840  49.23 
   5968  52.34 
   6096  55.61 
   6224  59.09 
   6352  62.72 
   6480  66.52 
   6608  70.48 
   6736  74.59 
   6864  78.85 
   6992  83.27 
   7120  87.85 
   7248  92.58 
   7376  97.45 
   7504 102.48 
   7632 107.66 
   7760 112.97 
   7888 118.44 
   8016 124.07 
   8144 129.86 
   8272 135.82 
   8400 141.95 
   8528 148.26 
   8656 154.73 
   8784 161.42 
   8912 168.33 
   9040 175.40 
   9168 182.82 
   9296 190.52 
   9424 198.49 
   9552 206.75 
   9680 215.30 
   9808 224.16 
   9936 233.34 
  10064 242.82 
  10192 252.63 
  10320 262.77 
  10448 273.23 
  10576 284.04 
  10704 295.18 
  10832 306.66 
  10960 318.48 
  11088 330.64 
  11216 343.14

1996 Vette MAF Transfer function

Code:

    MAF Sensor Calibration Table
 
  Hz    gm/sec
   1488   2.44 
   1616   2.86 
   1744   3.30 
   1872   3.80 
   2000   4.36 
   2128   4.99 
   2256   5.70 
   2384   6.47 
   2512   7.30 
   2640   8.20 
   2768   9.16 
   2896  10.19 
   3024  11.30 
   3152  12.48 
   3280  13.73 
   3408  15.09 
   3536  16.54 
   3664  18.11 
   3792  19.80 
   3920  21.59 
   4048  23.52 
   4176  25.55 
   4304  27.69 
   4432  29.94 
   4560  32.28 
   4688  34.69 
   4816  37.25 
   4944  39.91 
   5072  42.69 
   5200  45.58 
   5328  48.63 
   5456  51.83 
   5584  55.20 
   5712  58.77 
   5840  62.52 
   5968  66.47 
   6096  70.62 
   6224  74.96 
   6352  79.52 
   6480  84.27 
   6608  89.23 
   6736  94.41 
   6864  99.80 
   6992 105.41 
   7120 111.23 
   7248 117.27 
   7376 123.52 
   7504 129.98 
   7632 136.66 
   7760 143.54 
   7888 150.60 
   8016 157.89 
   8144 165.39 
   8272 173.11 
   8400 181.01 
   8528 189.24 
   8656 197.90 
   8784 206.75 
   8912 215.86 
   9040 225.23 
   9168 234.88 
   9296 244.77 
   9424 254.94 
   9552 265.36 
   9680 276.05 
   9808 286.99 
   9936 298.20 
  10064 309.66 
  10192 321.39 
  10320 333.38 
  10448 345.63 
  10576 358.13 
  10704 370.89 
  10832 383.91 
  10960 397.19 
  11088 410.73 
  11216 424.52

**dave w** · 11-05-2023

I wonder about '0411 injector parameters LT1 vs. L31?

**In-Tech** · 11-05-2023

1997 LT1 Camaro MAF Transfer funcion

Code:

    MAF Sensor Calibration Table
 
  Hz    gm/sec
   1488   2.45 
   1616   2.88 
   1744   3.34 
   1872   3.87 
   2000   4.45 
   2128   5.12 
   2256   5.85 
   2384   6.64 
   2512   7.49 
   2640   8.41 
   2768   9.40 
   2896  10.46 
   3024  11.60 
   3152  12.82 
   3280  14.11 
   3408  15.48 
   3536  16.98 
   3664  18.60 
   3792  20.34 
   3920  22.22 
   4048  24.23 
   4176  26.35 
   4304  28.60 
   4432  30.97 
   4560  33.43 
   4688  35.99 
   4816  38.69 
   4944  41.54 
   5072  44.52 
   5200  47.66 
   5328  50.97 
   5456  54.42 
   5584  58.04 
   5712  61.81 
   5840  65.77 
   5968  69.92 
   6096  74.27 
   6224  78.82 
   6352  83.59 
   6480  88.58 
   6608  93.80 
   6736  99.25 
   6864 104.93 
   6992 110.88 
   7120 117.04 
   7248 123.42 
   7376 130.03 
   7504 136.87 
   7632 143.92 
   7760 151.14 
   7888 158.63 
   8016 166.31 
   8144 174.03 
   8272 182.36 
   8400 191.01 
   8528 200.07 
   8656 209.43 
   8784 219.12 
   8912 229.15 
   9040 239.52 
   9168 250.23 
   9296 261.30 
   9424 272.71 
   9552 284.48 
   9680 296.61 
   9808 309.10 
   9936 321.96 
  10064 335.20 
  10192 348.80 
  10320 362.77 
  10448 377.14 
  10576 391.88 
  10704 407.02 
  10832 422.55 
  10960 438.46 
  11088 454.78 
  11216 471.51

**drptop70ss** · 11-05-2023

Originally Posted by In-Tech

1997 LT1 Camaro MAF Transfer funcion

Code:

    MAF Sensor Calibration Table
 
  Hz    gm/sec
   1488   2.45 
   1616   2.88 
   1744   3.34 
   1872   3.87 
   2000   4.45 
   2128   5.12 
   2256   5.85 
   2384   6.64 
   2512   7.49 
   2640   8.41 
   2768   9.40 
   2896  10.46 
   3024  11.60 
   3152  12.82 
   3280  14.11 
   3408  15.48 
   3536  16.98 
   3664  18.60 
   3792  20.34 
   3920  22.22 
   4048  24.23 
   4176  26.35 
   4304  28.60 
   4432  30.97 
   4560  33.43 
   4688  35.99 
   4816  38.69 
   4944  41.54 
   5072  44.52 
   5200  47.66 
   5328  50.97 
   5456  54.42 
   5584  58.04 
   5712  61.81 
   5840  65.77 
   5968  69.92 
   6096  74.27 
   6224  78.82 
   6352  83.59 
   6480  88.58 
   6608  93.80 
   6736  99.25 
   6864 104.93 
   6992 110.88 
   7120 117.04 
   7248 123.42 
   7376 130.03 
   7504 136.87 
   7632 143.92 
   7760 151.14 
   7888 158.63 
   8016 166.31 
   8144 174.03 
   8272 182.36 
   8400 191.01 
   8528 200.07 
   8656 209.43 
   8784 219.12 
   8912 229.15 
   9040 239.52 
   9168 250.23 
   9296 261.30 
   9424 272.71 
   9552 284.48 
   9680 296.61 
   9808 309.10 
   9936 321.96 
  10064 335.20 
  10192 348.80 
  10320 362.77 
  10448 377.14 
  10576 391.88 
  10704 407.02 
  10832 422.55 
  10960 438.46 
  11088 454.78 
  11216 471.51

Thank you again!

**In-Tech** · 11-05-2023

Hiya,
You're welcome.
Those early MAF's aren't so good, especially with a non stock inlet air tract. Just trying to get you a decent starting point for your tuning process.

**steveo** · 11-05-2023

corvette and f body maf calibrations are quite different even though they use the same sensors. this is likely due to plumbing differences and also different afr goals in the upper ranges and gm using it for fine tuning there rather than targeting perfect calibration

**drptop70ss** · 11-06-2023

Originally Posted by In-Tech

Hiya,
You're welcome.
Those early MAF's aren't so good, especially with a non stock inlet air tract. Just trying to get you a decent starting point for your tuning process.

Appreciate it, will definitely have a non stock air intake, will be a 96 LT1 T56 put into a 61 Rambler wagon going on an 87 monte carlo SS chassis. One of my usual mutt builds!

**drptop70ss** · 11-05-2023

Originally Posted by dave w

I wonder about '0411 injector parameters LT1 vs. L31?

The LT1 ran 24 pound injectors stock, I have never looked at an LS PCM tune running at vortec (yet, still have to get this one loaded onto a PCM), if the tables are set up the same I will adjust if needed.

**1project2many** · 11-08-2023

I wonder about '0411 injector parameters LT1 vs. L31?

Agreed. I would definitely expect to use injector tables that math the type of injector that is installed. The L31 Poppet style injectors are very different from traditional fuel injectors.

IME the stock one ton van injector voltage compensation is incorrect below 10V. If left stock our commercial vans have difficulty starting with a low battery and the exhaust is very rich at idle if the voltage drops. Leaving those tables intact could really mess with traditional injectors.

**dave w** · 11-09-2023

Originally Posted by dave w

I wonder about '0411 injector parameters LT1 vs. L31?

The injector parameters are from TunerCats OBD2 software:

1997 LT1
LT1 Injector Tables.jpg

2002 '0411 L31
L31 Injector Tables.jpg

**dave w** · 11-09-2023

2002 LS1 .bin file:

2002 LS1

2002 LS1 Injector Tables.jpg

**bobcratchet555** · 12-05-2023

Originally Posted by In-Tech

The X/Y isn't the same as the '0411 but this might help you extrapolate.

1996 Impala LT1 MAF Transfer function

Code:

    MAF Sensor Calibration Table
 
  Hz    gm/sec
   1488   1.89 
   1616   2.20 
   1744   2.55 
   1872   2.96 
   2000   3.40 
   2128   3.89 
   2256   4.44 
   2384   5.03 
   2512   5.69 
   2640   6.40 
   2768   7.15 
   2896   7.95 
   3024   8.80 
   3152   9.73 
   3280  10.73 
   3408  11.80 
   3536  12.95 
   3664  14.17 
   3792  15.49 
   3920  16.91 
   4048  18.44 
   4176  20.05 
   4304  21.74 
   4432  23.51 
   4560  25.36 
   4688  27.30 
   4816  29.32 
   4944  31.43 
   5072  33.62 
   5200  35.90 
   5328  38.30 
   5456  40.83 
   5584  43.49 
   5712  46.29 
   5840  49.23 
   5968  52.34 
   6096  55.61 
   6224  59.09 
   6352  62.72 
   6480  66.52 
   6608  70.48 
   6736  74.59 
   6864  78.85 
   6992  83.27 
   7120  87.85 
   7248  92.58 
   7376  97.45 
   7504 102.48 
   7632 107.66 
   7760 112.97 
   7888 118.44 
   8016 124.07 
   8144 129.86 
   8272 135.82 
   8400 141.95 
   8528 148.26 
   8656 154.73 
   8784 161.42 
   8912 168.33 
   9040 175.40 
   9168 182.82 
   9296 190.52 
   9424 198.49 
   9552 206.75 
   9680 215.30 
   9808 224.16 
   9936 233.34 
  10064 242.82 
  10192 252.63 
  10320 262.77 
  10448 273.23 
  10576 284.04 
  10704 295.18 
  10832 306.66 
  10960 318.48 
  11088 330.64 
  11216 343.14

1996 Vette MAF Transfer function

Code:

    MAF Sensor Calibration Table
 
  Hz    gm/sec
   1488   2.44 
   1616   2.86 
   1744   3.30 
   1872   3.80 
   2000   4.36 
   2128   4.99 
   2256   5.70 
   2384   6.47 
   2512   7.30 
   2640   8.20 
   2768   9.16 
   2896  10.19 
   3024  11.30 
   3152  12.48 
   3280  13.73 
   3408  15.09 
   3536  16.54 
   3664  18.11 
   3792  19.80 
   3920  21.59 
   4048  23.52 
   4176  25.55 
   4304  27.69 
   4432  29.94 
   4560  32.28 
   4688  34.69 
   4816  37.25 
   4944  39.91 
   5072  42.69 
   5200  45.58 
   5328  48.63 
   5456  51.83 
   5584  55.20 
   5712  58.77 
   5840  62.52 
   5968  66.47 
   6096  70.62 
   6224  74.96 
   6352  79.52 
   6480  84.27 
   6608  89.23 
   6736  94.41 
   6864  99.80 
   6992 105.41 
   7120 111.23 
   7248 117.27 
   7376 123.52 
   7504 129.98 
   7632 136.66 
   7760 143.54 
   7888 150.60 
   8016 157.89 
   8144 165.39 
   8272 173.11 
   8400 181.01 
   8528 189.24 
   8656 197.90 
   8784 206.75 
   8912 215.86 
   9040 225.23 
   9168 234.88 
   9296 244.77 
   9424 254.94 
   9552 265.36 
   9680 276.05 
   9808 286.99 
   9936 298.20 
  10064 309.66 
  10192 321.39 
  10320 333.38 
  10448 345.63 
  10576 358.13 
  10704 370.89 
  10832 383.91 
  10960 397.19 
  11088 410.73 
  11216 424.52

do you by chance have the 1996 impala ss tune that you could share? thanks

**drptop70ss** · 01-23-2024

Been a little bit, I wasn't getting notifications that this thread was being replied to but wanted to say thank you all for the help. Since I started this post I actually found an 02 Express van in the junkyard and grabbed the PCM. Turned out to be a 156 OS which is a common one and I could read it with tunerpro. This one was a factory 350/4L80e tune, and I did a segment swap to make an M6 tune using an 02 z28 file for the transmission side. I still have to update the injector data, thank you for that help! I will be running the stock 96 LT1 injectors since the engine is stock. With the mention that the LT1 uses the MAP sensor for spark tables, should I fail the MAF and just run in SD mode, or better to keep the MAF? I do not have a 96 timing table to look at, but I do have a 95 LT1 tune to reference that I can copy over to the van tune. Because I will be using the 4x crank wheel it will be running in batch fire mode, no more sequential.