any thought given to how to put the box closer to the ECU? I'm all for the primary wires being as short as possible.
we designed it to be inside the car for ease of operation as well as the the elements.the less wires going through the engine bay the cleaner it will look anyway.im guessing your concern is rfi? it wont make a difference as long as your connections are solid
RFI, resistance losses, wire capacitance, signal waveform distortion, all those goodies. Keep in mind I'm planning on adding that TCS box as well, so the wiring chain gets even longer. Maybe I'm just paranoid as I think I've tracked my stumble down to the MSD tach adapter I installed last year; stumble coincides with the shift light not working.
Also, no USB port in place of the serial?
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any thought given to how to put the box closer to the ECU? I'm all for the primary wires being as short as possible.
we designed it to be inside the car for ease of operation as well as the the elements.the less wires going through the engine bay the cleaner it will look anyway.im guessing your concern is rfi? it wont make a difference as long as your connections are solid
RFI, resistance losses, wire capacitance, signal waveform distortion, all those goodies. Keep in mind I'm planning on adding that TCS box as well, so the wiring chain gets even longer. Maybe I'm just paranoid as I think I've tracked my stumble down to the MSD tach adapter I installed last year; stumble coincides with the shift light not working.
Also, no USB port in place of the serial?
no problems with rfi or resistance, we originally had some issues with the clutch signal because of noise from the bus and the asd circuit but we fixed that.you can always get a serial to usb adapter,i prefer serial anyway because you dont have to worry about having to search the internet high and low for a driver
RFI, resistance losses, wire capacitance, signal waveform distortion, all those goodies. Keep in mind I'm planning on adding that TCS box as well, so the wiring chain gets even longer. Maybe I'm just paranoid as I think I've tracked my stumble down to the MSD tach adapter I installed last year; stumble coincides with the shift light not working.
Also, no USB port in place of the serial?
The WOT Box uses an extremely low resistance solid-state switch and 16-awg wire to minimize the resistive losses. The wiring should not add any significant capacitance or inductance that would cause any real distortion in the driving signals. The RFI added is not significant since we are on the non-switched side. There is only the chance for RFI when we interrupt the ignition for the WOT shift, however we have taken steps to minimize the amount of energy that is radiated.
If you think about it, an after-market tachometer has a much higher likelihood of causing interference than the WOT Box. The tachometer will tap into the switched side of the ignition coil, so the wire that runs from the ignition to the tach will act like an antenna, radiating the ignition pulses all over the car. Since the WOT Box is on the non-switched side, the voltages in our wires remain constant, thereby causing no RFI.
Our test units have been on daily-driven cars for several months now and no problems have been observed. We'll keep a close watch on this issue.
The combination of the WOT Box and the TCS should not add any more resistance to the ignition circuit path, since the TCS should be actively regenerating the ignition drive signals.
I guess I can understand the USB driver issue deal. you guys supplying a serial interface cable as well?
We'll sell as an option a USB-to-serial adapter for those who have laptops that don't have serial ports anymore. I use just such an adapter all the time for my development because my laptop doesn't have serial ports. They work great for this kind of application.
are they shiping yet, how about a low cost option that has no pc interface.
No, we're still waiting on the machine assembled boards. The board production and assembly takes a long time plus the parts are coming from the Philippines.
Since there are very significant tooling and NRE charges, we are not going to be able to make two different hardware versions. So, the PC interface hardware is going to be there no matter what. We may think about making a version with the interface disabled in software, but it would be kind of difficult. We'd have to maintain different sets of programmed units, and offer an upgrade path for people who buy it without the interface enabled and eventually want to enable it.
All of that adds complexity, so we felt it would be easier to just include it with all the units, just in case you want to use it later.
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