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.
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.
after warm up are you using the 3-wire idle valve to control idle speed? If so, I am puzzled as I can find that ability in MS-II
should read:
after warm up are you using the 3-wire idle valve to control idle speed? If so, I am puzzled as I can not find that ability in MS-II
MOPS, thank you for your prompt reply. I think we are now both on the same page, and your input is helpful. Today, I got my engine idling for the first time and very quickly came to the realization that MS-II currently has no explicit ability to set idle speed. For some reason I had it in my mind that MS-II had closed loop idle control like the Motronic system I am replacing. Then I starting reading the tuning instruction for setting idle by adjusting the VE table for lowest MAP while keeping RPM constant by adjusting the idle screw as required. At this point I was saying oh sh%$ to myself -- what have I gotten myself into. Anyway, your last post has given me incouragement that I haven't totally lost my mind, and there is light at the end of the tunnel.
1. stable IAT reading (ms will compensate, co if you tune it at 20deg C, it will idle higher at 8 deg C )
2. stable timing.... my engine generally incerases idle speed by 100 rpm per 1 degree of timing around idle map/rpm point. It is crucial to have stable timing there otherwise idle will be rolling
3. control over pwm idle valcve
4. tune idle only when fully warmed up - that idleudes warmed up oil pressure/temp not just coolant at normal operating temp
5. tune for lowest kpa around stock idle rpm. i'd stick on trying to 14.7 air/fuel for now. you can lean it later.
5. once you have done all of the abouve then tune your ve... shouldnt be very difficult.
BMW, 1985, E30, 325i, 2-door, 5spd , 127k miles, short shift, MSII, V3/code 2.684/60-2 wheel/MT 2.25, LC-1 wbO2, ignitor module mod driving msd coil/, 3 pin Bosch PWC IAC mod