Spider Posted July 1, 2012 Share Posted July 1, 2012 Hi, I have just acquired a microsquirt ecu and whilst I am collecting together the parts for EFI I would like to install the ecu as an ignition only unit. I have read some parts of the "Manual" and believe I only need a VR sensor and toothed crank wheel to get it to work if using an edis 6 unit to drive the coil pack. Has anyone fitted ign only Micro/Megasquirt and if so can they give me any info on how they did it?Many thanks.Spider. Quote Link to comment Share on other sites More sharing options...
James Posted July 1, 2012 Share Posted July 1, 2012 You are correct :) Quote Link to comment Share on other sites More sharing options...
Spider Posted July 1, 2012 Author Share Posted July 1, 2012 Thanks for that James, It can get a little confusing reading through all the info about Megasquirt let alone time consuming. I have since starting this tread, come across this page in the manual which may be of some use to anyone else considering the same route as me.http://www.megamanual.com/ms2/EDIS.htm Quote Link to comment Share on other sites More sharing options...
Nick Jones Posted July 1, 2012 Share Posted July 1, 2012 Would strongly recommend also either connecting to manifold vacuum or adding a throttle position sensor so you can add the 3rd dimension to the timing - makes a big difference.MS is somewhat technical, but the information is all there and pretty clearly presented (though I'd agree that with the number of variants now around it does get a bit confusing). Time spent learning about it is time well spent if you are planning to use it.Nick Quote Link to comment Share on other sites More sharing options...
James Posted July 1, 2012 Share Posted July 1, 2012 MAP is preferred - more reactive than TPS Quote Link to comment Share on other sites More sharing options...
Gt6s Posted July 1, 2012 Share Posted July 1, 2012 jcarruthers wrote:MAP is preferred - more reactive than TPSTPS worke far better with hot cams. Quote Link to comment Share on other sites More sharing options...
Spider Posted July 1, 2012 Author Share Posted July 1, 2012 Cheers guys, I think I will fit using just the VR sensor and add a MAP sensor later and add sensors in stages to compare and see the difference each makes as I think I will learn more that way rather than fitting them all at once and try and get it all working together at the same time. I believe it will help me with fault finding techniques if I ever have a sensor go down in the future.Many thanksSpider. Quote Link to comment Share on other sites More sharing options...
James Posted July 1, 2012 Share Posted July 1, 2012 Laurence - in fact even better is MS's hybrid SD/AN mode which blends between TPS for low down and MAP for higher up when the cam gives enough vacuum higher up the rev range.Spider - it's worth fitting a MAP sensor from the start, that's a very standard install. It's pretty odd not to have one at all. You can mount the standard Megasquirt MAP sensor in a small box from somewhere like Maplin and connect it up pretty easily. Quote Link to comment Share on other sites More sharing options...
TimW Posted July 2, 2012 Share Posted July 2, 2012 jcarruthers wrote:Laurence - in fact even better is MS's hybrid SD/AN mode which blends between TPS for low down and MAP for higher up when the cam gives enough vacuum higher up the rev range.Spider - it's worth fitting a MAP sensor from the start, that's a very standard install. It's pretty odd not to have one at all. You can mount the standard Megasquirt MAP sensor in a small box from somewhere like Maplin and connect it up pretty easily.does microsquirt not have it's own MAP sensor? Quote Link to comment Share on other sites More sharing options...
James Posted July 2, 2012 Share Posted July 2, 2012 Nope it doesn't — it's got minimal bits on board.It's pretty easy to wire one up. Quote Link to comment Share on other sites More sharing options...
Nick Jones Posted July 2, 2012 Share Posted July 2, 2012 You can get the MAP sensor from Farnell - about £ 9http://uk.farnell.com/freescale-semiconductor/mpx4250ap/ic-sensor-abs-press-36-3-psi/dp/1457153?Ntt=Pressure+sensor+MPX4250APMight also be possible to use a proprietry stand-alone automotive unit as swiped from a scrapper if the MS can be configured to it's characteristics?Nick Quote Link to comment Share on other sites More sharing options...
James Posted July 2, 2012 Share Posted July 2, 2012 Nick — that's the one I meant — mount it in it's own little box and job done. Quote Link to comment Share on other sites More sharing options...
James Posted July 2, 2012 Share Posted July 2, 2012 Nick — that's the one I meant — mount it in it's own little box and job done. Quote Link to comment Share on other sites More sharing options...
Spider Posted July 3, 2012 Author Share Posted July 3, 2012 Thanks for the info guys, I will fit the microsquirt with just a VR sensor but will be fitting the map sensor that Nick has suggested almost immediately after a 5/6 mile drive just to compare differences. I will be fitting other sensors in quick succession comparing the differences as I go along. VR,MAP, TPS, CTS, IAT and also fitting my wideband O2 sensor with JAW controller and display early on to check on the mixture settings along the way. I will also be fitting my HS6 carbs just to compare them against the original Strombergs before I go for the EFI set up.Many thanks.Spider. Quote Link to comment Share on other sites More sharing options...
Spider Posted July 3, 2012 Author Share Posted July 3, 2012 Hi Folks, I have just been thinking ahead on this install and was wondering what others have used for a relay board? I know one is not necessary but it may make for a neater install and the Megasquirt one seems a little expensive for 3 relays and 4 fuses. So what have others used instead?Thanks.Spider. Quote Link to comment Share on other sites More sharing options...
James Posted July 3, 2012 Share Posted July 3, 2012 Check on my site — it's a nice way of doing it — relay holders with integral fuses. Quote Link to comment Share on other sites More sharing options...
Spider Posted July 3, 2012 Author Share Posted July 3, 2012 Thanks James that looks like a good solution and much cheaper than a Megasquirt relay board.CheersSpider. Quote Link to comment Share on other sites More sharing options...
James Posted July 3, 2012 Share Posted July 3, 2012 The megasquirt relay board is a bit dodgy anyway if you ask me — screw terminals? no thanks. Quote Link to comment Share on other sites More sharing options...
.thumb.jpeg.b15b81ef10abeea1c3039ae03c4a9f3a.jpeg)
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.