Tranny line pressure in HPT - need to return to stock
 

Need to return my tranny line pressure to stock once I get the shift kit installed this weekend. Does anyone know what tables and parameters the Magnuson Superchips tune modifies from stock? Are all the modified values in the Base Shift Pressure vs. Torque vs. Gear tables?

i could email you the stock .bin file from my wife's 03 av

That would be very cool, thanks. I'll PM you my email addy.

Anyone else with insight please reply....I still need to know which tables need to be modified.

Here's what I've got (thanks mucho ZDEN for the stock file)....wondering if there are any other tables I need to be concerned with....also wondering if I should return exactly to stock, or something different:

Base Shift Pressure vs. Torque vs. Gear - NORMAL

STOCK '03 AVALANCHE
0 1 2 4 6 10 13 16 19 22 25 26 29 33 37 40 43 46 48 50 52 54 56 58 60 61 62 62 65 68 75 85 90
2 2 3 6 10 13 16 18 20 23 26 28 30 33 36 38 40 43 46 48 50 52 53 54 55 56 58 58 60 64 69 75 81
2 2 2 2 2 2 5 10 14 18 23 28 32 36 41 46 50 54 59 64 68 72 77 82 84 84 84 84 84 84 84 84 84
MY TRUCK
0 1 2 4 6 10 13 16 19 22 25 26 29 33 37 40 43 46 55 65 75 85 96 96 96 96 96 96 96 96 96 96 96
2 2 3 6 10 13 16 18 20 23 26 28 30 33 36 38 40 45 55 65 75 85 96 96 96 96 96 96 96 96 96 96 96
2 2 2 2 2 2 5 10 14 18 23 28 32 36 41 46 50 54 59 65 75 85 96 96 96 96 96 96 96 96 96 96 96

Base Shift Pressure vs. Torque vs. Gear - PERFORMANCE

STOCK '03 AVALANCHE
10 11 13 16 18 22 25 29 33 37 41 45 49 54 60 63 66 68 70 73 76 78 80 83 86 88 90 90 90 90 90 90 90
15 15 15 15 20 23 26 28 32 35 38 42 46 48 50 53 56 58 60 63 66 68 70 73 76 78 80 83 86 88 89 90 90
10 10 10 20 20 20 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 90 90 90 90 90 90 90 90 90 90 90 90
MY TRUCK
10 11 13 16 18 22 25 29 33 37 41 45 49 54 60 63 66 68 70 73 76 85 96 96 96 96 96 96 96 96 96 96 96
15 15 15 15 20 23 26 28 32 35 38 42 46 48 50 53 56 58 60 65 75 85 96 96 96 96 96 96 96 96 96 96 96
10 10 10 20 20 20 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 90 96 96 96 96 96 96 96 96 96 96 96

Force Motor Current vs. Commanded Line Pressure vs. Temp

STOCK '03 AVALANCHE
1094 991 947 898 859 820 781 742 693 640 586 522 459 381 273 98 98 1245
1094 991 947 898 859 820 781 742 693 640 586 522 459 381 273 98 98 1245
1094 977 928 879 835 801 762 718 674 620 566 503 439 356 244 98 98 1245
1094 962 913 869 830 796 757 713 669 615 557 498 430 342 220 98 98 1245
1094 952 903 864 830 791 757 713 664 610 557 493 425 342 220 98 98 1245
1064 942 898 859 825 791 752 708 664 610 552 493 425 337 215 98 98 1245
1035 928 889 854 820 786 752 708 664 610 557 498 430 342 220 98 98 1245
1030 928 889 854 820 786 747 708 664 615 562 503 435 352 234 98 98 1245
996 918 879 845 811 781 742 708 664 615 562 503 435 352 239 98 98 1245
991 913 879 845 815 781 752 713 669 620 566 513 449 366 259 98 98 1245
986 913 879 845 815 781 752 713 674 625 571 518 449 366 249 98 98 1245
986 913 879 845 815 786 757 718 679 630 576 518 454 376 264 98 98 1245
981 913 879 845 815 786 757 723 679 635 581 522 459 376 259 98 98 1245
981 903 874 840 815 786 757 718 679 635 581 527 459 376 249 98 98 1245
977 908 869 840 811 781 752 718 679 635 581 522 459 381 259 98 98 1245
977 903 869 835 806 781 752 718 679 630 581 522 459 376 254 98 98 1245
977 903 869 835 806 781 752 718 679 630 581 522 459 376 254 98 98 1245
MY TRUCK
1094 991 947 898 859 820 781 742 601 498 400 298 200 98 73 49 24 0
1094 991 947 898 859 820 781 742 601 498 400 298 200 98 73 49 24 0
1094 977 928 879 835 801 762 718 601 498 400 298 200 98 73 49 24 0
1094 962 913 869 830 796 757 713 601 498 400 298 200 98 73 49 24 0
1094 952 903 864 830 791 757 713 601 498 400 298 200 98 73 49 24 0
1064 942 898 859 825 791 752 708 601 498 400 298 200 98 73 49 24 0
1035 928 889 854 820 786 752 708 601 498 400 298 200 98 73 49 24 0
1030 928 889 854 820 786 747 708 601 498 400 298 200 98 73 49 24 0
996 918 879 845 811 781 742 708 601 498 400 298 200 98 73 49 24 0
991 913 879 845 815 781 752 713 601 498 400 298 200 98 73 49 24 0
986 913 879 845 815 781 752 713 601 498 400 298 200 98 73 49 24 0
986 913 879 845 815 786 757 718 601 498 400 298 200 98 73 49 24 0
981 913 879 845 815 786 757 723 601 498 400 298 200 98 73 49 24 0
981 903 874 840 815 786 757 718 601 498 400 298 200 98 73 49 24 0
977 908 869 840 811 781 752 718 601 498 400 298 200 98 73 49 24 0
977 903 869 835 806 781 752 718 601 498 400 298 200 98 73 49 24 0
977 903 869 835 806 781 752 718 601 498 400 298 200 98 73 49 24 0

I cant wait till I understand what all that means.

Me either... :jest:

Here are a couple more tables where I found changes:

Desired Shift Time vs. Torque - NORMAL

STOCK '03 AVALANCHE
0.575 0.575 0.575 0.5 0.475 0.45 0.45 0.425 0.4 0.375 0.375 0.35 0.35 0.325 0.325 0.3 0.3
0.6 0.55 0.5 0.475 0.45 0.425 0.375 0.375 0.35 0.325 0.3 0.275 0.25 0.238 0.225 0.225 0.225
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
MY TRUCK
0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Desired Shift Time vs. Torque - PERFORMANCE

STOCK '03 AVALANCHE
0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3
0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
MY TRUCK
0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

wow, those are some low force motor current values, it must have felt pretty firm.

check out the upshift pressure modifiers to, more than likey they are not changed though.

also you should return to stock, with mechanical pressure changes that come with the shift kit, you shouldent need to raise them anymore with the software.

I'm curious, how much difference did the shifts feel after you got the Magnuson tune? I'm trying to find some good setup tables for my truck to replace it with. So far the one's I've used haven't worked to well for me.

i have a bin file from my '03 silvy with the shift tables set up from the pred i had before i got hpt. i liked the way it shifted with these settings so i kept them. i even used almost the same settings for my '05