So, I've been digging through schematics and researching for quite a while now trying to learn how to make my MS2 have sequential injection. I didn't assemble this board and I've just hit a brick wall with all of the possibilities. I know that my particular MS2 only has 2 injector drivers. I know how to solder to a board, and how most electronics components work. What I don't know is exactly what I need to install or connect to where to get sequential injection working. I know for sequential ignition I would need a crank position sensor. But the CAS is sufficient for injection, correct? So here are some pics of what I'm working with. Can I make this work in the proto area with some simple components? Do I need to buy the diypnp doo-dad on diyautotune's site? Someone help me out please. I can provide more detailed pictures or descriptions if needed.

 

BRAIN: Hey awesome, I built that MS!

OBAMA: You didn't build that.

 

Basically all 4 injectors need the same driver. It's easier if you build 4 new injector drivers circuits at the same time.

I like to copy the circuit on the DIYPNP/MS3X, which uses 1 driver and 2 resistors each. Very simply and works well.

But to make life even easier, you could buy this board: 4-Channel Ignition/Injection Driver Board

and follow the documenation here: Sequential Injection Code for MS2

read through it like 4-5 times.

 

Obeezy

 

Fo-sheezy.

 

Sweet, thanks for the help Brain. My awesome gub'ment network won't let me check the second link at work. I'll have a look when I get home. But it looks like that is exactly the information I needed to make this work.

 

weird, it's the same server.

I have to use a token to view, myself. But I cant access the second...It wont load if you open in a second tab, but it will if I load in the same tab I logged in with.

 

So if I understand correctly, I can use this schematic for the MS3x. I build 2 more injector driver circuits (assuming these already match the existing 2) or build 4 new ones with the same components. I jump the FET output to the corresponding pins on the 37 pin ouput connector. But where do I pull the injector number 3 and 4 FET inputs from? It would be PA2 and PA3 on the diagram? I really hate to pay $50 for a board and $5 in components when I have the capability to make my own circuit boards if I need to. Either that, or shouldn't I be able to use the on board proto area and then sink the FET's to the case like the others?

 

all four drivers need to match. so if you build the above, you need to build all 4.


if you read the docs I posted, it explains where the outputs go. you have to mod the ms2 daughterboard and remove the cpu clock circuit from the mainboard (not really all of it, just the components touching a certain spot).


here:



The picture below shows the placement on the V3.0 board of the 4 injector channels. The standard injector drivers components can be left on the board but will be unused and will not interfere with injector channels 1 and 2. The injectors channels 3 and 4 connect to pads originally used for the MS1 clock circuit and require the removal of those components for proper and safe operation. The injector channel 3 shows 2 pads because they correspond to the same electrical location (use either one). The components to remove are: R21,C20,C21,R22,R23,Y1,C24,C25.

 

Ah ok, I was making it much harder than it needed to be. Thanks again for the help brain. I don't care what the president says, you did build that.

 

you have spare 1-2-3 available along with the current 2 INJ outputs.

correct.