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 discussion of MicroSquirt (TM) from Bowling and Grippo. The MicroSquirt information site is at www.usEasyDocs.com
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 am going to put Microsquirt (already purchased) to My Vmax this winter. Is there anyone who has already done it? If not Could someone help me a little bit?
My Vmax model year is 1986 and it has four pickup coils.
Question 1:
If I first try only fuel. How do I connect those four independent pickups to MicroSquirt Or should I only use one of those and which one? Or is it possible to use those at all and perhaps using simultanously squirting?
Question 2:
Second phase I will also include ignition. Do I need a trigger wheel like 36-1 then or might I use also those four stock pickup coils?
Someone said that stupid questions don't exists...
For fuel only you can use the coils to provide a tach signal for MS. Just do fuel first and leave the ignition stock. Then once you get the fuel right, have a look at ignition.
The VMax was discussed a lot some time ago, I can't find the thread, I think the conclusion was that it runs like 2 oddfire twins side by side with a timing offset between each pair (a pair is front/rear cyl on LHS and front/rear on RHS). I don't think the oddfire code can work with 2 oddfire twins running with an offset. I could be wrong though. To be sure though, draw or mark the ignition events on a 720 degree scale and see if 2 ignition outputs can somehow run the engine, wih wasted spark maybe or whatever. In Microsquirt, you can dial in an offset between the two ignition outputs. In MS2Extra, you could maybe ask the developers for help, but they will need the drawing of cylinder firing on the 720 degree scale, plus you will need to supply a drawing of the stock sensor wheel or mount a generic wheel like 36-1 on the crank plus a cam sensor or just a missing tooth cam wheel. I think it's a 75 degree twin so wasted spark is probably out of the question.
Thanks for the clear explanation! Now I am definetely sure to do fuel first!
Anyway when I fueling it first, to where and how I connect sync signal from coil to MicroSquirt. Is one coil enough? Could you perhaps draw it to my word attachement. I cannot know how much to thank you for it!
