Shift extension issues, need help.
Shift extension issues, need help. Just installed a Yank SS3600, told by Dave at yank that shift extension would be 4800-5000rpm. Car shifts at over 6200 and drops to 4200-4400rpm.
I logged a run, 1-2 shift @ just over 6200rpm dropped to 4550rpm. Looking at the log file I noticed a few things. On the graph I notice the rpms stop/hesitate at 4900rpm and wheel speed goes up to 60 then drops to 51mph and at the same time the rpms drop to 4559. Also during all this the TCC slip goes negative briefly, about -400 rpm or so, during 1>2 shift trans mode changes to ---3--- and holds that all through second and it goes away at 2>3 shift.
1st two files have WOT runs, third file is the tune I'm using.
I logged a run, 1-2 shift @ just over 6200rpm dropped to 4550rpm. Looking at the log file I noticed a few things. On the graph I notice the rpms stop/hesitate at 4900rpm and wheel speed goes up to 60 then drops to 51mph and at the same time the rpms drop to 4559. Also during all this the TCC slip goes negative briefly, about -400 rpm or so, during 1>2 shift trans mode changes to ---3--- and holds that all through second and it goes away at 2>3 shift.
1st two files have WOT runs, third file is the tune I'm using.
Last edited by thebulgd; Jul 6, 2008 at 02:29 PM.
