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.
For discussing how to choose sensors and create a wiring harness for all Bowling and Grippo versions of the MegaSquirt® EFI controller.
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).
hello again. my newest question is this. is there a specific place i should mount the iat sensor? obviously in the intake air stream, but should it be away from the engine to avoid heat or is anywhere okay. i have a gm tbi truck with the round aircleaner. it does have duct hose that runs to the core support. i was thinking i could weld a bung to the bottom of the aircleaner outside of the filter, but it would get hot when the engine heats up possibly negating the sensor readings. thanks.
brian
no, do...or do not. there is no try.
MS-II v2.687/v3 main board
3/4 ton chevy gm tbi w/8 pin hei
On the TBI truck I'm doing right now, I just punched a hole in the duct inlet on the rad support. The sensor I used was a clip-in type but any would work. Most of the earlier GM EFI cars placed the IAT away from the engine in the ducting near the outside air entry point - and still do.
I used an open style (though closed would work in this app) that just pushes in and has a clip on the inside. Just whack a 5/8" hole and poke it in. A walk through the boneyard looking at intake boxes yields some interesting sensors.