Shift Points
Thread Starter
Teching In
Joined: Feb 2007
Posts: 16
Likes: 0
From: California
Shift Points 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!
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.
