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a different th400 question

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Old Sep 4, 2010 | 03:22 PM
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Default a different th400 question

i recently swapped from a t56 to a 400. my question is in the tune. did anyone else have to change anything in there mph versus rpm tables as far as when the car is shifting? i was shifting the car around 6600 with the m6. now i have to set the shift light to 6k and when it comes on its damn near on the limiter which is set at 6800. i am thinking the computer is still seeing that i am reaching either the mph or the rpm when it should be shifted and is cutting on the limiter, according to the gear and tire calculator at 6k in 3rd gear i should be at 122 mph. when i cross the stripe in the 1/8th the shift light is coming on and im only trapping 102. any thoughts?

RPM 1st Gear 2nd Gear 3rd Gear
500 4 7 10
600 5 8 12
700 6 10 14
800 7 11 16
900 7 12 18
1000 8 14 20
1100 9 15 22
1200 10 16 24
1300 11 18 26
1400 11 19 28
1500 12 21 30
1600 13 22 32
1700 14 23 34
1800 15 25 36
1900 16 26 39
2000 16 27 41
2100 17 29 43
2200 18 30 45
2300 19 31 47
2400 20 33 49
2500 20 34 51
2600 21 36 53
2700 22 37 55
2800 23 38 57
2900 24 40 59
3000 25 41 61
3100 25 42 63
3200 26 44 65
3300 27 45 67
3400 28 47 69
3500 29 48 71
3600 29 49 73
3700 30 51 75
3800 31 52 77
3900 32 53 79
4000 33 55 81
4100 34 56 83
4200 34 58 85
4300 35 59 87
4400 36 60 89
4500 37 62 91
4600 38 63 93
4700 38 64 95
4800 39 66 97
4900 40 67 99
5000 41 68 101
5100 42 70 103
5200 42 71 105
5300 43 73 107
5400 44 74 109
5500 45 75 111
5600 46 77 113
5700 47 78 116
5800 47 79 118
5900 48 81 120
6000 49 82 122
6100 50 84 124
6200 51 85 126
6300 51 86 128
6400 52 88 130
6500 53 89 132
6600 54 90 134
6700 55 92 136
6800 56 93 138
6900 56 94 140
7000 57 96 142
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Old Sep 4, 2010 | 06:35 PM
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just to put it out there, the vss is not hooked up either.
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Old Sep 4, 2010 | 09:20 PM
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the converter is a brand new circle d 4200. i sure hope its not slipping that much. chris said 6-7%. that seems like a lot more than that.
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Old Sep 4, 2010 | 09:26 PM
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heres is an in car video. notice the limter comes in on the 1-2 shift pretty much as soon as the light comes on. also it comes on at the stripe.

http://www.vimeo.com/14695203
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