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| · How do I make my transmission shift at a lower or higher Speed? You must modify the part throttle upshift/downshift tables for the calibration currently selected. Remember to match your WOT settings for accordingly for your calibration. [ Back to Top ]
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| · Where should I connect the TCU +12v on my car? You need to find a switched ignition source capable of pulling 10 amps. If you cannot find a source capable of pulling a reasonable amount of current, they you may have to wire a relay to the battery that is switched by your ignition. The PCS TCU comes with a fused harness for additional protection. [ Back to Top ]
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| · My TPS never reads 0% or 100% and/or I don't seem to reach Full Throttle (WOT) in the monitor screen. What do I need to do? You must set the TPS voltages correctly in Transmission Setup. Go to Transmission Setup -> Analog Inputs -> AD1 (or whichever AD your TPS is on) -> Function. Reading the voltage for the A/D Input on your monitor screen you will want to correctly assign the closed throttle and open throttle voltages. You should also assign the % of voltage to use for the definition of full throttle. This is typically 90% but if you want to enter WOT mode earlier or later, change this value. [ Back to Top ]
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| · My transmission is shifting too hard/soft. How do I fix it? This is a very broad and transmission dependant subject. Some transmissions require matching line and accumulator pressures. Most transmissions can modify shift firmness/speed with line pressure alone. To modify either accumulator or line pressure, you should go to the load vs line pressure or load vs accumulator pressure for the calibration you are working in. There will be a line for each shift which can be edited graphically in the table. For most line pressure solenoids, raising the values will soften/slow the shifting. For most accumulators, raising the values will stiffen/quicken the shifting. [ Back to Top ]
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| · How do I calculate how my tire diameter? The TCU software already as an embedded tire size calculator. Go to Wizards -> Calculate Tire Diameter. Otherwise the calculation is simply:
(Tire Width * Tire Ratio * 2) + Rim Diameter
You may need to divide this term (Tire Width * Tire Ratio * 2) by 25.4 to convert mm to inches. [ Back to Top ]
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| · How do I make my torque converter lockup at a higher/lower Speed? You must modify the TCC Lockup/Unlock table for the calibration currently selected. Keep in mind that the TCC lockup parameters will prevent/allow lockup at preset temperatures and determine the lowest gear to allow TCC lockup. [ Back to Top ]
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| · How do I make my torque converter lockup quicker/slower? This is transmission dependant as some transmissions use only an on/off solenoid, some use only a PWM solenoid and some use a combination of an on/off solenoid and a PWM solenoid. PWM controls can be altered by the PWM TCC Pressure Control table in the Calibration/Tuning section. You can select a starting duty cycle, ending duty and application rate for lockup and unlocking of the TCC. [ Back to Top ]
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| · How do I tune or program the TCU? You will need a computer with a serial port to program the TCU. Each TCU harness comes with a communications cable to plug directly into your serial port on your computer. After plugging the communications cable into your computer and powering up the TCU, you must start the TCU software and you will be ready to begin. [ Back to Top ]
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| · My laptop does not have a serial port, what do I do? Some newer laptops no longer have serial ports built into them. You will need to purchase a USB to Serial adaptor which can usually be found at your local computer or electronics store. IOGear, Belkin and Keyspan are all popular manufacturers of such adaptors. [ Back to Top ]
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| · What kind of computer will I need to run the TCU software? Our recommended computer requirements are:
· Processor: Pentium 400MHz or above
· RAM: 64MB
· OS: Windows 98, ME, 2000, XP
· Hard Drive Space: 10MB for install, additional space for datalogs & calibrations
· Video: 1024x768 or greater resolution
· Peripherals: CD-ROM or internet connection required to obtain software
Our minimum computer requirements are:
· Processor: Pentium 200MHz or above
· RAM: 24MB
· OS: Windows 95, 98, ME, NT, 2000, XP
· Hard Drive Space: 10MB for install, additional space for datalogs & calibrations
· Video: 800x600 or greater resolution
· Peripherals: CD-ROM or internet connection required to obtain software
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