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  1. Engineer/Geek Types, questions about PWM controlled Brushless and Voltage Boosters

    You are the only one who is contradicting themselfs. Constant duration= More time?
  2. Engineer/Geek Types, questions about PWM controlled Brushless and Voltage Boosters

    Voltage drives amperage Frequency also drives amperage. Amperage is what determines the motors speed. This is all true for both AC and DC. The difference is DC does not actually need a frequency component for delivering current and its all determined by resistance. You get to a point where an...
  3. Engineer/Geek Types, questions about PWM controlled Brushless and Voltage Boosters

    OP told me there's nothing to log, after I told him what wires to log. He might understand more now as I described how to wire the regulator into the Ngauge. No way he knows what he is looking at on an oscilloscope. Keep it 4th grade like he asked. Pointless to even talk about that side of...
  4. Engineer/Geek Types, questions about PWM controlled Brushless and Voltage Boosters

    The requirement of a precise energizing sequence to control the speed of the motor, does not change the fact that the DC pulses and their frequency, have no effect on the resistance of each coil. It's speed will have a limit set by the amperage the voltage can force through in the maximum pulse...
  5. Engineer/Geek Types, questions about PWM controlled Brushless and Voltage Boosters

    No the frequency between 0-x volts does not determine the speed of the DC motor. The resistance, voltage, and current still do that. At some point the frequency and just having the pump just on all the time, will be nearly the same. Higher frequency will not change the loads resistance allowing...
  6. Engineer/Geek Types, questions about PWM controlled Brushless and Voltage Boosters

    The pumps circuit. DC voltage goes into the DW brushless controller. Pulses of DC voltage comes out of it and controlls the speed of the pump. The slower the pulses the slower the pump speed, the faster the pulses the faster the pump speed. " This controller accepts an 8-22v DC input and...
  7. Engineer/Geek Types, questions about PWM controlled Brushless and Voltage Boosters

    If you trust the grounding in the car, is just attach the green wire to the input pin on the back of the ngauge.
  8. Engineer/Geek Types, questions about PWM controlled Brushless and Voltage Boosters

    With one of the gauges inputs log the voltage on the green and black wire of the regulator. I gave you the transfer function, but you can just look directly at the voltage.
  9. Engineer/Geek Types, questions about PWM controlled Brushless and Voltage Boosters

    The control signal, from the ECU or regulator as you have setup, is an open at low frequency and a ground at high frequency. The voltage going to the controller and being modulated to run the pump speed is a seperate circuit. The pump is not getting an alternating current. Think of the pump...
  10. Engineer/Geek Types, questions about PWM controlled Brushless and Voltage Boosters

    Sorry I had to edit my original post after doing more research. What you are doing should work, and you should log your regulator to know what its doing. This is not as simple as your typical return style fuel system or even just hi/ low pump triggering. The end results should be fairly...
  11. Engineer/Geek Types, questions about PWM controlled Brushless and Voltage Boosters

    feedback: correcting error after it happens feedforward: predicting error and accounting for it before it happens This pump controller is neither. Its operating on a buffer that can absorb the error. As long as the engines fuel demand doesn't change so fast that it over runs that buffer and...
  12. Shoemaker Performance Tunes are available here at Lethal Performance!!

    He used to be at a number of tuning shops and was well known before PBD. Ken only hired him because of his reputation before working there and thought they would make a great team, which they did for years. Nothing wrong with people going their own way. Ortiz use to work for Bama, still an...
  13. Check my plugs

    Have you tried adding a bottle of iso-heet and running the fuel tank very low before refilling? Red bottle, not the yellow.
  14. New PB and it was a big gap down!

    I think it has been more than 2 years. This was long over due, congrats.
  15. Borderline Spark Tuning - Humidity Effects

    I think what Im getting at is I got nothing from this post. Mike is doing some interesting research here we all know that, but the results being shared are not being collected in a safe manner. He knows this and is being way too conservative to really see the difference humidity correction...
  16. Borderline Spark Tuning - Humidity Effects

    1. You don't need to be doing this knock correction testing at 1.7-1.8 load with the potentially most intense knock. 2. Do you agree that compressor systems without air drying capability tend to produce compressed air that is saturated at ambient temperature? Meaning dew point of the flowing...
  17. MAF Frequency on throttle tip in

    On tipin there is potentially a brief spike in MAF Hz from the air rushing in filling the manifold, not all of that contributes to cylinder filling. During this brief period the ECU will use the manifold filling model and speed density to correct the MAF lb/min value to obtain a more accurate in...
  18. Interesting dyno test (cats and boost)

    The only RPM, 1% change in torque = 1% change in power is 5252RPM. And to keep this short, rev it to higher RPM if peak power is your goal. Both catted and FFE were still climbing in power. You may only see where the cats choke flow higher in the RPMs.


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