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View Full Version : MegaSquirt (MS) Custom Builds (interest?)


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turbotalon1g
02-19-2010, 01:29 PM
Can we get some more info on this MAP sensor and altitude sensor?

Andrew7dg
02-19-2010, 01:35 PM
Do you happen to know if many of the local shops have experience tuning with it?

Around here, no
In other parts of the country, yes

However if the tuner knows how to tune a map based VE table and Spark table (which is also used by other standalone ECUs) the tuner should be able to tune using Tuner Studio. It is a really EASY program to work with. Very quick if you know the hot keys.

I will be glad to bring my car in somewhere so that they would gain experience. I have the program on my laptop and just a run around the block should be enough for the experience and figure out the functions.

Once I figured out how all of this work I learned that ECUs are built pretty much all the same.

It is like a stereo system. There are Inputs/ and there are Outputs
Then all you have to do is just figure out how the car breaths

HOWEVER for the spark tuning, i highly recommend bringing it to a steady state dyno to get the spark dialed in. That really can't be done on the road.

Andrew7dg
02-19-2010, 01:48 PM
Can we get some more info on this MAP sensor and altitude sensor?


From DIYautotune
http://www.diyautotune.com/images/products/mapdaddy4/mapdaddy003.jpg

Fits on the board like this
http://www.diyautotune.com/images/products/mapdaddy4/mapdaddy011.jpg

And this is what you have to run a manifold pressure line to
http://www.diyautotune.com/images/products/mapdaddy4/mapdaddy012.jpg

It is just 2 map sensors. One reads the pressure in the manifold and the other one reads the outside atmosphere pressure.

Really we would need just one because our state is pretty flat. You would usually use this when traveling up and down mountains where the pressure would greatly change to the point that it throws off the ECU.

Andrew7dg
02-19-2010, 01:49 PM
http://www.diyautotune.com/images/products/mapdaddy4/mapdaddy_info.jpg

SO BIG!!!

Shane@DBPerformance
02-19-2010, 01:51 PM
I have tuned Megasquirt cars and I am pretty sure most of the shops in town have.

turbotalon1g
02-19-2010, 01:57 PM
Yeah megasquirt is pretty common and has been around for years, its just that DSMers have a lot of other choices.

Andrew7dg
02-19-2010, 07:29 PM
Yeah megasquirt is pretty common and has been around for years, its just that DSMers have a lot of other choices.

It has been around for a while but not to this level. MSII came out not that long ago is a lot more advanced then MSI. MSIII is just around the corner which is WAY more advance then any of the previous versions.

I wouldn't feel comfortable offering MSI as a standalone. It is pretty primitive. However, I don't think many people realize MSII capability for a standalone ECU because it is still fairly new. It was brand new when I installed it onto my car and there were only a handful of DSM running on MSII at the time. Then tunerstudio came out and made things so much more user friendly. Thats why I am offering to help assemble and offer this to people.

Now MSIII is just around the corner. I can't wait to see the possibilities with that system. It is evolving from a computer programmer ECU to a user Friendly system in a very short amount of time.

cv\