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Mustang Forums
2011-2014 Mustangs
Driveline/Suspension
Mustang GT MT82 to T56 Magnum XL swap - info to fill in the gaps.
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<blockquote data-quote="GapRider" data-source="post: 16050065" data-attributes="member: 158174"><p>My original post might not have been clear, here's what you have to do in the tune:</p><p>IN THE TUNE:</p><p>a-SPEEDO SECTION/VSS P. / Rev - Trans (#pulses / output shaft revolution). This is 34.0058 for the MT82 and needs to be changed to 12 for the T56 (borrowing info from a GT500 tune which apparently uses TREMEC transmission)</p><p>b-TRANS SECTION/SHIFT GENERAL/GEAR RATIO - enter the T56 Gear ratios for 1 - 6</p><p>c-TRANS SECTION/SHIFT GENERAL/MANUAL - enter the T56 Gear ratios for 1 - 6 and Reverse. Here you also enter the min and max values for the ratios (I used excel to do this, calculating from the MT82 values in the tune) - it's about + and - 2%</p><p>d-SPEEDO SECTION/N / V Base (RPM / MPH in 1:1 gear) - this is 5th on the MT82, 4th with the T56. Drive the car in 4th gear at any nominal MPH and note the RPM. You could also log those values for more accuracy. Divide the RPM by the MPH.</p><p>For example 4th gear, 60 MPH, you read 2950 RPM on the tach</p><p>2950/60 = 49.167</p></blockquote><p></p>
[QUOTE="GapRider, post: 16050065, member: 158174"] My original post might not have been clear, here's what you have to do in the tune: IN THE TUNE: a-SPEEDO SECTION/VSS P. / Rev - Trans (#pulses / output shaft revolution). This is 34.0058 for the MT82 and needs to be changed to 12 for the T56 (borrowing info from a GT500 tune which apparently uses TREMEC transmission) b-TRANS SECTION/SHIFT GENERAL/GEAR RATIO - enter the T56 Gear ratios for 1 - 6 c-TRANS SECTION/SHIFT GENERAL/MANUAL - enter the T56 Gear ratios for 1 - 6 and Reverse. Here you also enter the min and max values for the ratios (I used excel to do this, calculating from the MT82 values in the tune) - it's about + and - 2% d-SPEEDO SECTION/N / V Base (RPM / MPH in 1:1 gear) - this is 5th on the MT82, 4th with the T56. Drive the car in 4th gear at any nominal MPH and note the RPM. You could also log those values for more accuracy. Divide the RPM by the MPH. For example 4th gear, 60 MPH, you read 2950 RPM on the tach 2950/60 = 49.167 [/QUOTE]
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2011-2014 Mustangs
Driveline/Suspension
Mustang GT MT82 to T56 Magnum XL swap - info to fill in the gaps.
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