turbobluemiata

iTrader: (8)

Okay so I bought a used Devils Own Progressive Kit, I understand how to hook everything up except the controller! The instructions are here in this PDF http://www.alcohol-injection.com/ins...uctions_02.pdf On page 6 It says to use the green wire of the controller goes to the 0-5v output of your MAP sensor! So which wire of my MS does that go to or do I have to buy a separate MAP sensor?

Joe Perez

iTrader: (8)

You could tap the MS's MAP sensor at pin 1 of the sensor itself (the one with the square pad) however this of course creates the possibility of introducing noise into the MS's MAP signal. I'm running my DO controller with it's own external MAP sensor. They're not terribly expensive, and it keeps things separated.

turbobluemiata

iTrader: (8)

Well I think I will try to tap the MS signal first..... Anymore details about Pin 1??? and square pad? Im not following, also what external MAP are you using?

cardriverx

iTrader: (12)

on the ms, pin 1 will have a square solder pad on the ms board. Thats what to tap into.

turbobluemiata

iTrader: (8)

I cant tap somewhere in the harness? Well maybe I will buy an external MAP cause I don't wanna have to solder anything......

Joe Perez

iTrader: (8)

Nope. The MAP sensor is internal to the Megasquirt, and its signal resides entirely on the motherboard. It goes from the MAP sensor, through R2 and across C2, and then straight into the CPU.

Which sensor you need depends upon which controller you have. They're available scaled for 2bar, 2.5bar and 3bar sensors. DO sells 'em for $65, but you can do better at your local auto parts store, and better yet at a junkyard if you do some research and figure out what cars have the sensor you want.

turbobluemiata

iTrader: (8)

Do you know how I check what controller I have????

Joe Perez

iTrader: (8)

Well, one method would be to read the documentation, specifically the part where it says:If you want to change the mode, you could look at the documentation for that too.

turbobluemiata

iTrader: (8)

missed that part sorry man

Milton Tucker

iTrader: (2)

Mine came setup for a 3 BAR Map sensor, but can easily be changed for a 2 BAR sensor.

turbobluemiata

iTrader: (8)

did you just hook it up to power and ground?

Milton Tucker

iTrader: (2)

I installed per instructions. I provided an ignition controlled positive voltage to the progressive controller. I provided a ground to the controller. I connected the controller’s green wire to an existing MAP sensor. I connected the blue output from the controller to the red wire on the pump. I then grounded the pump. I did not use the gray wire since I did not need to power a MAP sensor. I adjusted the threshold setting for 6PSI, and have my maximum setting at 10PSI. I used my gauge to set these values, as the graduated markings on the controller did not seam to be accurate
I plan to convert my car from Band-Aids to MS next time I am state side, but plan to leave the water injection standalone.

gospeed81

iTrader: (51)

So if using a solenoid you would tee the blue wire to the solenoid as well as pump?

turbobluemiata

iTrader: (8)

no i meant to see what bar your controller was set at

Milton Tucker

iTrader: (2)

To be honest, I don’t remember if I had fully installed the unit before I first applied power. I believe it will flash the MAP setting by connecting power to the controller, but this will also cause the controller to flash an error due to the pump not being connected.