Calling all megasquirt geniuses I need your help!! 2jz Megasquirt EMS Pro
Well well well, after dealing with my car for a while now I am tired of the piggy back band aid crap so I have been searching for what I need for tuning my 2jz. I need help working thru a few things. I think I want to run the Spectre EMS-pro witch is based off megasuirt and makes my life easy for the most part.
eMS-Pro Electronic Fuel Injection System with 8' Harness | EFI SourceEFI Source This is what I am thinking of buying. I dont really think I need a MSII and I like to keep it as simple as possible. Below will be what I understand and have no problem with and what I need cleared up. Required inputs: • 12 volt switched ignition - can wire this no problem lol • Chassis or battery ground - I hope I can find this one too If I was to use a cam sensor I would be installing a magnet on my cam gear and mounting a sensor this is the best option at the moment. • Coolant Temperature • Intake Air Temperature Will use GM sensors easy to get and I have the IAT already • Manifold Pressure -4-bar (40+ psi) map sensor included inside the eMS-PRO unit Will prob wire in GM 3 bar but could use internal one too • Throttle Position -Any OEM 0-5v sensor can be calibrated to the eMS-PRO will use stock toyota one its is 0-5v Should I use more than one? • Engine Position, one of the following - -Points -Distributor Sensor (any magnetic, hall, or optical input) -Crankshaft Trigger (hall/opto or magnetic; multiple tooth patterns supported) I am not going to use my distributor I will be deleting it. I can use the toyota crank sensor as long as I get a new crank timing gear. I have two options in number of teeth 12 teeth evenly spaced or 36-2. I do not have a gear yet so I will be ordering one to use. I believe one is a halo and one is a mag. After I figure out witch crank cam gear is best the next problem I have is the injectors and the ignition. The EMS-pro only has two injector banks. My plan is to wire them in two banks. Does anyone see any probelm with this I know sequential would be better but I do not need that I believe batch fire injectors will be fine. Cyl 1,3,6 one bank one Cyl 2,4,5 one bank two Ignition this is my other big problem I dont really understand. The unit has 4 ignition outputs so I can do wasted spark that is how my car is setup now and I like it so I have no problem with it. The question is how do I fire the coils. Can I use LQ9 coils and just send the fire signal directly to them since they have ignitors built into them? If I do this I will be using one wire and splitting it to fire two cylinders will be fired together. Each has its own coil I will just be splitting the signal wire to two coils. 1,6 2,5 3,4 Other option is I have coils made for wasted spark so like the Miata VVT coils one is COP with a wire runing to the next. Mine are IS300 coils. If I use the coils I have how the hell do I fire them from what I read the factory ignitor does not work with megasquirt so what would you do. So to recap should I use just a crank sensor or a crank and cam is there an advantage to having both. Is there a difference between a 12tooth or 36-2 tooth crank signal is one better or worse. Should I use LQ9 coils and can I directly signal them from the megasquirt because it has an ignitor built in If I use my factory coils how do I fire them because the factory ignitor does not work well with megasquirt Any information would be great and very much appreciated. I need you all to help me make more HP in my 2jz!!!!! |
if you want to keep it simple, just buy an ms3+ms3x
its waaaay easier to setup than figuring out the exact configuration you need for for MS2 or whatever the damn hell that box you linked is. |
So with a megasquirt3 I can just wire the signal direct to the Lq9 coils and directly to the injectors am I reading that correctly?
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yes, with ms3+ms3x you can.
you WILL need the ms3x (which is the expansion card) because that gives you 8 injector and 8 coil outputs. |
1 Attachment(s)
because you're probably confused, this is what "ms3+ms3x" is - its actually 3 boards plugged into each other, in a single, chubby case.
https://www.miataturbo.net/attachmen...ine=1394659229 (see, 3 circuit boards) blue one is the main board white one is the MS3 CPU green one is the MS3X |
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