Tci Controller Settings

[gEtyOpAPiOn]

ok steve ...it looks like i got it ...as far as shift points ...it works great now ...the only thing i dont understand is that *force motor blah blah thing graph but you can call me anytime next week thanks

[Steve Chryssos]

Cool! Did you double check the TPS sensor calibration? You will want to do that before proceeding with line pressure changes. We'll still talk next week, but here's how the line pressure tables work:

You have pwm solenoids in your transmissions. PWM means Pulse Width Modulated--same as the fuel injectors in your engine. When they are open, fluid is allowed to pass thru and pressure therefore drops. As duty cycle increases more fluid is allowed to bleed.
At low engine loads, less pressure is required and the opposite is true: At high loads, more pressure is required. Max pressure (zero duty cycle) is specified at wide open throttle. While at idle, maximum duty cycle (low pressure) is specified.
So, if you go look at the force motor tables in your software, you will see graphs that start high at top left and decrease as throttle position moves towards bottom right:

So you can tweak the graphs for more pressure by pulling the graphs down. The TCI and PCS software works a bit differently--and I'm on the road with a Mac (not a PC) so I can't look at the software right now.

But as a rule, it's best to start by tweaking the middle gears. And it's best to tweak the middle parts of each graph. The right end of the graph (80-100% throttle position) is already at or approaching zero duty cycle, so leave it alone. And the left side of the graph handles low load situations (around town driving), so you do not want too much pressure--leave it alone or make very minor changes. But in between--say 30% to 70% throttle position, you can pull the graph down in 5% increments and test. But the graph should look smooth, so blend the changed middle section into the ends (i.e. a 1 or 2% change at 20% and a 3% change at 30% TPS with a full 5% change at 40%, 50%, 60%, 70% TPS.
If you are feeling brave or stupid, you can pull the whole graph down at once, but I recommend the gradual "blending" method described above.
REMINDERS:
-So you should start by tweaking the middle parts of the graphs and in the middle gears. 1st gear should be pretty good.
-Save your original map before making changes.
-Double check TPS calibration before you make changes.
-You'll need a buddy in the passenger seat and a laptop. Have him monitor gear and TPS using the Dashboard Screen during testing. That way you can communicate: YOU: "It feels soft right there." BUDDY: Okay, right there is 60% TPS in 3rd gear. Bring a pad & pen.
-Be alert: Be prepared to lift off the throttle immediately if slippage is present.
-Got a trans cooler? Remember that as you increase pressure, YOU ALSO INCREASE HEAT!!
/Steevo