MS II injector wiring
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0).
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
MS II injector wiring
i've just purchased a MSII on Ver 3 board. i'm going to using 450cc low ohm injectors on my turbo Toyota 3TC. do i need to connect an resistor in series with the injector? if i eliminate it, do i need to make certain setting changes in the Megatune?
For low-impedance injectors (less than 3 Ohms), you need to limit the current to avoid overheating the injectors. To do this, there is a period of time that you apply full battery voltage [peak] current, then switch over to a lower current-averaged [hold] current, i.e. peak and hold. Alternatively, you can add resistors in series with the injectors.
assume that i have a series resistor pack connected with the low ohm injectors, should i follow according to "High Impedence" or "low impedence"?If you are running high-impedance injectors (greater than 10 Ohms), then set the:
PWM Time Threshold to 25.4 msec, and the
PWM Current Limit (%) to 100%.
If you have low impedance injectors (less than 4 Ohms), set the:
PWM Time Threshold to 1.0 msec, and
PWM Current Limit to 75% (30% if you have installed the 'Flyback Board' daughter card).
if the total resistance (injector+resistor) is more than 10 ohms, i'll need to configure it according to the "high impedence" setup?
currently my wiring is 1 resistor (6 ohm) connected to 1 injector (2.9ohm), there are total of 4 injectors on my 3TC. refered to the VER 3 board external diagram, 2 injectors in 1 bank. should i connect 1 resistor to Bank1 and another to Bank2?
or can i just eliminate the resistor and run directly switched +12V to the "low ohm" injectors as in VER3 External diagram?
currently my wiring is 1 resistor (6 ohm) connected to 1 injector (2.9ohm), there are total of 4 injectors on my 3TC. refered to the VER 3 board external diagram, 2 injectors in 1 bank. should i connect 1 resistor to Bank1 and another to Bank2?
or can i just eliminate the resistor and run directly switched +12V to the "low ohm" injectors as in VER3 External diagram?