Maxzillian Posted December 21, 2009 Report Share Posted December 21, 2009 (edited) Apparently just enough to make things troublesome. It contains a V3.0 board, a JBPerf I/O Expander board, and a JBPerf injector driver board. Enough inputs and outputs to handle sequential injection, individual coil control, and do just about everything on the list of tricks that MS Extra caters to. The current plan is launch control, boost control, radiator fan control, emission component control (just the charcoal canister valve), table switching; and data logging a few things like wheel speed, exhaust temp and oil pressure. Ultimately I want to allow it to digitally control water injection as well. http://maxzillian.com/starion/msecu4.jpg The DB-9 connector will be replaced with an audio connector. http://maxzillian.com/starion/msecu5.jpg A wiring nightmare! http://maxzillian.com/starion/msecu6.jpg Edited December 21, 2009 by Maxzillian Link to comment Share on other sites More sharing options...
psu_Crash Posted December 21, 2009 Report Share Posted December 21, 2009 That's no nightmare. That's good stuff!The proto area of my board is jam packed with circuits to do most of what your add-ons do. Yours is a much cleaner setup though, I dig it. 2 x 37-pin headers? Guessing one is for the extra I/O? Why replace the DB9 with an audio connector? Link to comment Share on other sites More sharing options...
Maxzillian Posted December 21, 2009 Author Report Share Posted December 21, 2009 Yup, the expansion board uses its own 37 pin connector. It provides 4 VR inputs, 6 high amp outputs, 6 low amp outputs or inputs, and 6 or 8 analog inputs. Rather handy! I had to remove the DB-9 connector because of an interference between it at one of the transistors for the injector driver board. That's ok though, I rather like the audio connectors better anyway just because they're more compact and quicker to connect. Link to comment Share on other sites More sharing options...
Funky Phil Posted December 21, 2009 Report Share Posted December 21, 2009 Dayum!! Think itll get toasty?? May want some heat sinks. Link to comment Share on other sites More sharing options...
jahjah Posted December 22, 2009 Report Share Posted December 22, 2009 lemme know how Launch control works.... I wanna add Boost and launch control. already running fan control Link to comment Share on other sites More sharing options...
slowquest Posted December 22, 2009 Report Share Posted December 22, 2009 (edited) VERY clean build, much nicer than mine. I really like the connector idea on the injector driver board, for some reason, I never thought of that, hope you don't mind me stealing it....lol http://i711.photobucket.com/albums/ww112/slowquest/Picture006.jpg I've since added boost control, and it also has launch control. I don't happen to see the launch control mod on your daughtercard, did you do something different? ETA: Jahjah, I don't think you can do launch control with EDIS....not 100% sure though. Edited December 22, 2009 by slowquest Link to comment Share on other sites More sharing options...
Maxzillian Posted December 23, 2009 Author Report Share Posted December 23, 2009 (edited) I don't mind at all! Only tip I can give is that the header pins need to be bent at about a 45 degree angle for everything to clear. The connection is looser than I like, but some silicone on final assembly will ensure it stays put. I haven't done any supporting mods yet for things like launch control and boost control. I'd say I'm only 80% done at the moment. However, from what documentation there is on the IO board, I gather it'll take a launch control input directly, without any modifications. Thus negating any need to modify the daughter card. However, I may end up modifying the daughter card to gain a few additional inputs, but I think the IO board has me covered in spades. Well worth the investment! I'm already shopping for a small accelerometer to connect to it for datalogging. As for EDIS, you can do launch control, but you'll need a board to control voltage to the coils. I can't remember who makes it, but it is for the Megasquirt systems and will cut coil voltage to allow for rev limiting by spark cut. Edited December 23, 2009 by Maxzillian Link to comment Share on other sites More sharing options...
psu_Crash Posted December 23, 2009 Report Share Posted December 23, 2009 I have one of THESE installed to cut spark on my EDIS system. I am not using the launch control I just use it for a rev limiter that triggers off the shift light output of MS. Link to comment Share on other sites More sharing options...
slowquest Posted December 23, 2009 Report Share Posted December 23, 2009 cool board.... Link to comment Share on other sites More sharing options...
jahjah Posted December 23, 2009 Report Share Posted December 23, 2009 I have one of THESE installed to cut spark on my EDIS system. I am not using the launch control I just use it for a rev limiter that triggers off the shift light output of MS.very cool. good to know Link to comment Share on other sites More sharing options...
substock Posted December 23, 2009 Report Share Posted December 23, 2009 I have one of THESE installed to cut spark on my EDIS system. I am not using the launch control I just use it for a rev limiter that triggers off the shift light output of MS. how do you like the board? i've been wondering if i should get mine for my megajolt when i'm done with my rebuild the megajolt has a built in soft rev limiter thats to come on 100 rpm before the set thresholdhttp://i97.photobucket.com/albums/l225/substock/Rebuild/DSC00437.jpg Rev LimitThe Rev Limit output is an RPM switch with special behavior. At the specified RPM threshold, the Rev Limit output is activated and can be used to trigger an external Rev Limiter module, such as the Autosport Labs Hard Rev Limiter 100 RPMs before threshold the ignition advance goes to zero BTDC to act as a 'soft' rev limiter by significantly reducing engine power. Together with an external hard rev limit module this provides an effective rev-limit solution, naturally excluding mechanical over-rev situations. For instructions on wiring an external rev limit module, see the Installation Guide. i may get it just to be safe as it isn't too expensive. Link to comment Share on other sites More sharing options...
psu_Crash Posted December 23, 2009 Report Share Posted December 23, 2009 I have no complaints. It does what it's supposed to do and if you are using it with megajolt it's plug and play. With MS I had to wire up a transistor and resistor to supply the +5V trigger signal. Link to comment Share on other sites More sharing options...
Maxzillian Posted December 27, 2009 Author Report Share Posted December 27, 2009 Finally started setting up TunerStudio MS on a laptop... wow! I've got a long road ahead of me. Link to comment Share on other sites More sharing options...
Maxzillian Posted December 28, 2009 Author Report Share Posted December 28, 2009 Started working on getting everything to talk. I'm very near done configuring the boards. I'm waiting on a response from JBPerf concerning how to setup the ADC circuits and then I can start plotting what needs to plug in where. The good news is, it all talks! The mad scientists lair! Ok ok, it's a big honking desk with crap scattered about, occupying a spare room. http://maxzillian.com/starion/msecu7.jpg Just a simple test so all I needed was power and ground. You can see the twisted pair connection on the other end of the boards serving as the CANbus line. http://maxzillian.com/starion/msecu8.jpg TunerStudio playing nice with the expander board. It requires a different project file from the main ECU, but if I understand the documentation correctly, all datalogging can still be done through the main project. http://maxzillian.com/starion/msecu9.jpg Link to comment Share on other sites More sharing options...
MikeMeyerhoff Posted December 28, 2009 Report Share Posted December 28, 2009 yeah but can it go past 85mph? Link to comment Share on other sites More sharing options...
jahjah Posted December 28, 2009 Report Share Posted December 28, 2009 Very cool. i hope i get another job soon, i can't wait to rip out my engine and redo my engine bay, gonna rewire and re run my MS and everything. Link to comment Share on other sites More sharing options...
Maxzillian Posted December 30, 2009 Author Report Share Posted December 30, 2009 Made some progress today. Glued the accelerometer down using silicone sealant. http://maxzillian.com/starion/msecu10.jpg Wired it up. http://maxzillian.com/starion/msecu11.jpg View from up top. http://maxzillian.com/starion/msecu12.jpg And even made you guys a test video. Link to comment Share on other sites More sharing options...
jahjah Posted December 30, 2009 Report Share Posted December 30, 2009 what exactly does the accelerometer do? Link to comment Share on other sites More sharing options...
Maxzillian Posted December 30, 2009 Author Report Share Posted December 30, 2009 It's used for measuring G-forces. In the case of cars, most people are interested in measuring lateral acceleration or in other words, the force of the turn. In my case I eventually want to use it to help the ECU determine if the rear tires are slipping or not. By comparing how quickly the rear tires are accelerating compared to how quickly the car is actually accelerating, you can determine the amount of wheel slip. It's just a round about way of getting around installing wheel speed sensors on the front of the car. Actually not far off in principle compared to how the stock rear wheel ABS works. Link to comment Share on other sites More sharing options...
Maxzillian Posted January 4, 2010 Author Report Share Posted January 4, 2010 Got the EGT circuit functioning! http://maxzillian.com/starion/msecu13.jpg http://maxzillian.com/starion/msecu14.jpg Aside from fixing a problem with the Fidle circuit (going to use it as a tach-out signal) the main ECU board is now done. I do need to order up a new MS-II chip as mine has some sort of short on the tach circuit, but that is just a simple plug and play affair. Link to comment Share on other sites More sharing options...
keving54b Posted February 20, 2010 Report Share Posted February 20, 2010 Holy sh-t!!! i'm going MPI with Megasquirt and did not know all the stuff you can do with that ECU. I do all my mechanical stuff my self but electronics hate me, most of the time they died! LOL!! Link to comment Share on other sites More sharing options...
psu_Crash Posted February 20, 2010 Report Share Posted February 20, 2010 Looks Good! My EGT circuit worked like a charm on the bench. Once I installed in the car I get A LOT of noise in that signal. Like +/- 50 to 100 degrees constantly. I'll be waiting to see how yours works in the car. Thinking I should rebuild the circuit for logging EGT, etch a small board for it and place it very close to the EGT probe then run the 0-5v signal wire back to MS. Link to comment Share on other sites More sharing options...
Maxzillian Posted February 21, 2010 Author Report Share Posted February 21, 2010 That may not be a bad idea. In theory good shielding so solve any noise issues though. Something I recommend is installing some sort of ground for the exhaust manifold. I believe the EGT probe shields usually ground out through the probe itself. Giving the manifold a good ground may help reduce noise. A braided wire ground should hold up to the heat. Link to comment Share on other sites More sharing options...
psu_Crash Posted February 21, 2010 Report Share Posted February 21, 2010 I ran high quality shielded industrial thermocouple cable for it so it shouldn't have been an issue but it's getting interference somewhere. I also have my downpipe grounded thinking that would help but it didn't. Link to comment Share on other sites More sharing options...
Maxzillian Posted March 2, 2010 Author Report Share Posted March 2, 2010 (edited) More progress! Aside from a few small connections, doing a final determination of what will connect where, and testing, it's done! Constructed at least. I do need to fix a small problem with grounding the injector driver correctly, but it's a small hurdle. http://maxzillian.com/starion/msecu15.jpg There's a surprising amount of room. At least enough for all the internal wiring. My only concern is that the injector drive wires may cause interference. Time will tell. http://maxzillian.com/starion/msecu18.jpg The front end definitely tells that something is hiding under the skin. The 3/32" audio connector is for the serial connection. http://maxzillian.com/starion/msecu17.jpg The back side is much simpler. Just the MAP sensor fitting and some bolts for securing the injector transistors to the case. http://maxzillian.com/starion/msecu16.jpg Edited March 2, 2010 by Maxzillian Link to comment Share on other sites More sharing options...
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