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. 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). For tuning/troubleshooting questions, please attached a datalog and your MSQ file to your post.
After battling many issues that would come and go, I think I finally got to the bottom of the problems. My fuel pump would not come on all the time. Could never get it to fail on the bench. My coolant temp sensor sometimes would not read at all. Turning it on and off would sometimes fix the problem. Tuning was also an issue as I had the VE table down to 1 at idle at it was always rich and up to 255 at full throttle and it was always lean. Think ran like heck when it ran at all. I then reloaded the software and all my problems went away. The fuel pump and coolant have not been an issue since then. I loaded a default ve table from the megamanual and the thing ran almost perfectly. Had to richen up the upper end about 15% but that is it. This is the best the thing has run including when it had a carb. It has a fairly lumpy cam and the thing idles like a stocker at 800 rpm all day. About 1000 was the best with a carb. Little issue when I back off the throttle with the clutch in. The motor almost stalls and then catches itself and idles normally.
The moral is don't stop looking for answers. After over 2 months of struggling I have driven the car every day for 10 days and have not had to touch it.
The decel is set at 100% right now. I will do some playing this weekend. I just got my o2 sensor back today from being fixed(replaced). I will see if it is lean or rich. It almost feels rich but the 02 sensor will tell me the truth. It is just nice to have to thing run very well every well else. I can live with this if I have to but I think it is fixable.