Tuning, Diagnostics, Electronics, and Wiring HP Tuners | EFILive | Hand Held Programmers | Stand Alone PCM's | Electronics | Wiring Diagrams

need help with shift points

Thread Tools
 
Search this Thread
 
Old Dec 6, 2011 | 05:01 PM
  #1  
getonit's Avatar
Thread Starter
TECH Apprentice
iTrader: (3)
 
Joined: Jul 2007
Posts: 348
Likes: 0
From: Alma, Ga
Default need help with shift points

I changed my gears from 3.42 to a 4.10 with 295/50/16-27.7 tall tires. My rpms on 1/2 is 6350 and 2/3 is 6300 and 3/4 is 5800 in tow haul. In normal it is 6000 in 1/2 and 2/3 and 5800 at 3/4. I used a speed calculater that blackgmc posted on here but it still don't shift right. I adjusted the rpm and shift speed. Am I missing something. Its still shifting crazy. Im using hptuners.
Reply
Old Dec 6, 2011 | 05:03 PM
  #2  
getonit's Avatar
Thread Starter
TECH Apprentice
iTrader: (3)
 
Joined: Jul 2007
Posts: 348
Likes: 0
From: Alma, Ga
Default

I also went from a 3000 stall to a 4000. Do I make any adjustments for that or is it about the same?
Reply
Old Dec 6, 2011 | 05:09 PM
  #3  
Rhino79's Avatar
9 Second Club
iTrader: (7)
 
Joined: May 2005
Posts: 3,127
Likes: 1
From: Cabot, AR
Default

The looser the verter, the lower the mph will haveto be. Set the rpm where you want it. Then drop the wot mph by 1-2 mph at a time. Also make sure the part throttle table at 100% throttle match. Make sure wot and part throtle downshift tables are lower than the upshift.
Reply
Old Dec 6, 2011 | 05:13 PM
  #4  
getonit's Avatar
Thread Starter
TECH Apprentice
iTrader: (3)
 
Joined: Jul 2007
Posts: 348
Likes: 0
From: Alma, Ga
Default

Do I need to adjust the tps/rpm/speed tables??
Reply
Old Dec 6, 2011 | 06:02 PM
  #5  
Rhino79's Avatar
9 Second Club
iTrader: (7)
 
Joined: May 2005
Posts: 3,127
Likes: 1
From: Cabot, AR
Default

Yes. I don't have my pc w me, but in efilive there are tables for part throttle based off tps, and wot vs mph and wot vs rpm.
Reply
Old Dec 6, 2011 | 06:15 PM
  #6  
andrew383's Avatar
traveling mod
iTrader: (14)
 
Joined: Oct 2007
Posts: 3,262
Likes: 1
From: so. indiana/texas
Default

I would start with zeroing out the WOT mph and just set your RPM and relog to see what its shifting at mph wise,then adjust from there..
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
MikeD.
Tuning, Diagnostics, Electronics, and Wiring
2
Oct 13, 2015 08:08 AM
jtphelps289
GM Parts Classifieds
18
Sep 29, 2015 12:00 PM
Lthompson
FORCED INDUCTION
16
Sep 15, 2015 07:55 PM
TAPyvehc93
GM Drivetrain & Suspension
4
Sep 14, 2015 01:22 PM
xerox17
GM Drivetrain & Suspension
1
Sep 5, 2015 01:23 PM




All times are GMT -5. The time now is 04:00 AM.