Announcement

Collapse
No announcement yet.

TPS-TEC Mod

Collapse
X
Collapse

  • TPS-TEC Mod

    TPS, or the Throttle Position Sensor is the device that tells the computer how far the throttle plate is open. The major misconception with this device is that the car uses it for fuel delivery. The MAP (Manifold Air Pressure) or MAF (Mass Air Flow) actually have this job, not the TPS. The job of the TPS is for what is called Power Enrichment in the computer. At a programmed TPS %, the car will resort to a different set Air/Fuel ratio for the added demand on the motor.


    The TPS-TEC is supposed to take the real TPS and tell the computer you are at a higher TPS%. This is all done through varying voltage, so the device itself most likely works. However, the real question is "what does it achieve". Well, it achieves what your foot achieves. You can think that your car is faster because instead of 70% throttle, it only takes 60% throttle to go into this Power Enrichment mode.


    The other questionable advertising claim is its TPS% change. It claims that 70% throttle is all you need with this device...which is the exact same % that the stock computer is programmed for (at least on automatic 3.1 and 2.8 FWDs) to hit PE mode. It is uncertain if this means 70% of the stock 70%, or if its just the SAME % as stock.


    *UPDATE*


    I have now tried one of these devices on a 91 Lumina Z34 using freescan to monitor the TPS that the computer sees. It appears that the TPS is the same as it would be stock until you hit 94% real TPS. It immediately jumps to 100. Thats 6% difference at near WOT anyway. What a complete waste of money, it doesn't even do what it advertises!


    If you still insist this device gives you better throttle response, its time to have the ass-dyno recalibrated.


      Posting comments is disabled.

    Article Tags

    Collapse

    There are no tags yet.

    Latest Articles

    Collapse

    • Throttle Body Spacer
      bszopi
      Port injection The TB spacer is meant to keep the throttle body cooler, by separating it from the manifold using a phenolic material instead of metal. The misconception is that by adding space behind the TB, you are going to get more torque. The lowered temperature is fine, and is worthwhile (see TB coolant bypass), but the cost of a spacer and the remaining intake manifold temperature doesn't do a whole lot on its own. The performance myth with this device is that it allows more air in, or that it lengthens the runners, or anything else along these lines. The torque curve i...
      05-31-2010, 05:32 PM
    • Throttle Body Heat Shield
      bszopi
      A heat shield made out of aluminum is nothing more than a heat sink. The heat from the heads going to the manifold, with the throttle body attached to it will be a far greater source of heat compared to the exhaust manifold that is not attached to the throttle body. There are better ways to decrease intake air temp, with this one giving absolutely nothing in return for your money.
      05-31-2010, 05:31 PM
    • Throttle Body Coolant Bypass
      bszopi
      This isn't so much a myth, as it is exaggerated. The lines were put in by GM for cold climate conditions, which is said to cause ice to form on TB, which could cause a lot of problems, like a stuck open condition that can cause an accident. There have been no known reports of this happening, but there hasn't been any research either.
      ...
      05-31-2010, 05:30 PM
    • Electric Superchargers
      bszopi
      There are several different versions of this myth floating around.

      Here is one view on why electricity and boost don't mix: Click Here!
      ...
      05-31-2010, 05:28 PM
    • Thermostat
      bszopi
      I'm going to keep this short, because its a simple concept. For years people have been spreading the word that a 160 stat will cause problems. This is true, as it hurts gas milage and MAY cause the cylinder walls to wear faster due to less expansion. If your fan turn on times aren't matched, it can allow a cycle of 160 to 220 degrees back and forth, which will contract and expand the cylinders.
      ...
      05-31-2010, 05:26 PM
    • IAT Resistor Mod
      bszopi
      IAT stands for Intake Air Temperature. It is a simple thermistor that changes its resistance according to the temperature it is at. The idea beind this modification, is that by changing the resistance to that of a cooler interpreted reading, you will get more fuel. While it is true that you will dump more fuel...its false that this is a good idea. Running rich is bad for performance, so you are just wasting your time with adding more fuel in this fashion.
      ...
      05-31-2010, 05:07 PM
    Working...
    X