The MegaSquirt Project has experienced explosive growth other the years, with hundreds of new MS installations occurring every week - a phenomenal success! MegaSquirt has been successfully used in all aspects of Internal Combustion engine applications including R&D, Industry, Race, and Research. The MS project has transformed itself from a simple R&D project into a full-featured mature engine control system. To reflect this the support structure has also changed to meet the needs of MegaSquirt Users.
Moving forward, the R&D forums for MegaSquirt project are in a read-only mode - no new forum posts are accepted.
However the forums will remain available for view, they still contain a wealth of information on how MegaSquirt works, how it is installed and used. Feel free to search the forums for information, facts, and overview.While the R&D forum traffic has slowed in recent years, this is not at all a reflection of Megasquirt users, which continue to grow year after year. What has changed is that the method of MegaSquirt support today has rapidly moved to Facebook, this is where the vast majority of interaction is happening now. For those not on Facebook the msextra forums is another place for product support. Finally, for product selection assistance, all of the MegaSquirt vendors are there to help you select a system, along with all of the required pieces to make it complete.
This forum is for discussing ignition setup, tuning, and troubleshooting for MicroSquirt (TM)
Forum rules
Read the manual to see if your question is answered there before posting. If you have questions about MS1/Extra or MS2/Extra or other non-B&G code configuration or tuning, please post them at http://www.msextra.com The full forum rules are here: Forum Rules, be sure to read them all regularly.
Hello,
I'm planning to switch from my EDIS 6 coil pack back to my stock Nissan COP's which have 3 wires if possible. It appears to my untrained eyes that I could simply take the EDIS wires from PINS 10, 11 and 12 seen here:
and run them to the COP's PIN 3 (two COP's per each EDIS wire naturally). PIN 1 is ignition power and PIN 2 is ground on the stock wiring diagram.
I think that the edis module needs the load of a coil in order to calculate the proper dwell. Because of that, it will probably provide to much dwell which may damage your cop's. If you use an ms1 processor with the extra code, you could drive your cop's directly,plus have the benefit of a rev limiter.
Another option would be to bias your cop's on all the time, wire pairs in series for a wasted spark and then drive them directly from the edis. Pin 1 of a coil would go to pin 2 of it's pair. Pin 2 of that coil would go to the edis pin 10,11,or 12.
subie4me wrote:
Another option would be to bias your cop's on all the time, wire pairs in series for a wasted spark and then drive them directly from the edis. Pin 1 of a coil would go to pin 2 of it's pair. Pin 2 of that coil would go to the edis pin 10,11,or 12.
Can you clarify what you mean by "bias" them on all the time? Also, what would I do with PIN 3 of my COP's?
subie4me wrote:
Another option would be to bias your cop's on all the time, wire pairs in series for a wasted spark and then drive them directly from the edis. Pin 1 of a coil would go to pin 2 of it's pair. Pin 2 of that coil would go to the edis pin 10,11,or 12.
Can you clarify what you mean by "bias" them on all the time? Also, what would I do with PIN 3 of my COP's?
thanks,
allen
Try putting a 1k resistor between pin 2 & 3. That should bias them on all the time. This will turn them into a two wire cop, letting the edis module control the dwell properly.
The output from the EDIS module will be inverted i.e. it supplies ground to charge the coil, but those COPs expect 5v? to charge the coil because the schematic indicates that they are a combined coil and ignitor.
If you are running MS1/Extra on a V3 board you could ditch the EDIS module and connect those coil/ignitors direct to the board.
jsmcortina wrote:The output from the EDIS module will be inverted i.e. it supplies ground to charge the coil, but those COPs expect 5v? to charge the coil because the schematic indicates that they are a combined coil and ignitor.
If you are running MS1/Extra on a V3 board you could ditch the EDIS module and connect those coil/ignitors direct to the board.
James
I keep hearing that and am wondering why I went w/ MSII in the first place, sounds like MSI/Extra is at least a little more adaptable. How would I go about switching over to MSI? Would I have to start all over w/ new hardware or is this MSII hardware still useful?
