Shift Points
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Hi all,
I need some advise for shift points in my PCM tune. Currently, I shift at 5900 rpm in the 1-2 and 2-3 shifts. Pulling through the finish line in third, the truck feels kind of flat and I feel that it can pull much harder. I go through the stripe at around 5000 rpm. I have a 3200 stall converter and I launch at 2800 rpm. Am I doing something wrong with the tune when it comes to shift points? BTW, I use the truck for bracket racing use only and it sees no street time.
Thanks for any help you all may be able to offer!
I need some advise for shift points in my PCM tune. Currently, I shift at 5900 rpm in the 1-2 and 2-3 shifts. Pulling through the finish line in third, the truck feels kind of flat and I feel that it can pull much harder. I go through the stripe at around 5000 rpm. I have a 3200 stall converter and I launch at 2800 rpm. Am I doing something wrong with the tune when it comes to shift points? BTW, I use the truck for bracket racing use only and it sees no street time.
Thanks for any help you all may be able to offer!
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You have to change the mph that each shift occurs as well as the rpm. In EFIlive it looks like this:
Transmission Calibration.Shift at VSS.Upshift
{D0910} WOT 1->2 Shift Speeds, Normal, changed from "31" to "39".
{D0911} WOT 1->2 Shift Speeds, Performance, changed from "31" to "39".
{D0912} WOT 1->2 Shift Speeds, Hot, changed from "31" to "39".
{D0915} WOT 2->3 Shift Speeds, Normal, changed from "61" to "77".
{D0916} WOT 2->3 Shift Speeds, Performance, changed from "61" to "77".
{D0917} WOT 2->3 Shift Speeds, Hot, changed from "61" to "77".
Also the RPM Tables
Transmission Calibration.Shift at RPM.Upshift
{D0940} WOT 1->2 Shift RPM, Normal, changed from "5851" to "6500".
{D0941} WOT 1->2 Shift RPM, Performance, changed from "5851" to "6500".
{D0942} WOT 1->2 Shift RPM, Hot, changed from "5851" to "6500".
{D0945} WOT 2->3 Shift RPM, Normal, changed from "6058" to "6500".
{D0946} WOT 2->3 Shift RPM, Performance, changed from "6058" to "6500".
{D0947} WOT 2->3 Shift RPM, Hot, changed from "6058" to "6500".
{D0950} WOT 3->4 Shift RPM, Normal, changed from "5949" to "6500".
{D0951} WOT 3->4 Shift RPM, Performance, changed from "5949" to "6500".
{D0952} WOT 3->4 Shift RPM, Hot, changed from "5949" to "6500".
You will have to play around with the speeds for your set-up, but this should help.
Transmission Calibration.Shift at VSS.Upshift
{D0910} WOT 1->2 Shift Speeds, Normal, changed from "31" to "39".
{D0911} WOT 1->2 Shift Speeds, Performance, changed from "31" to "39".
{D0912} WOT 1->2 Shift Speeds, Hot, changed from "31" to "39".
{D0915} WOT 2->3 Shift Speeds, Normal, changed from "61" to "77".
{D0916} WOT 2->3 Shift Speeds, Performance, changed from "61" to "77".
{D0917} WOT 2->3 Shift Speeds, Hot, changed from "61" to "77".
Also the RPM Tables
Transmission Calibration.Shift at RPM.Upshift
{D0940} WOT 1->2 Shift RPM, Normal, changed from "5851" to "6500".
{D0941} WOT 1->2 Shift RPM, Performance, changed from "5851" to "6500".
{D0942} WOT 1->2 Shift RPM, Hot, changed from "5851" to "6500".
{D0945} WOT 2->3 Shift RPM, Normal, changed from "6058" to "6500".
{D0946} WOT 2->3 Shift RPM, Performance, changed from "6058" to "6500".
{D0947} WOT 2->3 Shift RPM, Hot, changed from "6058" to "6500".
{D0950} WOT 3->4 Shift RPM, Normal, changed from "5949" to "6500".
{D0951} WOT 3->4 Shift RPM, Performance, changed from "5949" to "6500".
{D0952} WOT 3->4 Shift RPM, Hot, changed from "5949" to "6500".
You will have to play around with the speeds for your set-up, but this should help.