MSefi.com read only forum (Jan.15,2018)

Yeah I got the injector opening time nailed. I figgured out why the maps were so off and hopefully this can be a lesson learned and save some one some trouble. These injectors are very large for my apication at idle and it was difficult to tune because the idle injector pulse width is only 1.4ms. I ...

Thanks Matt, That is exactly what I thought. Now what about this. Why would injectors twice the size (1000cc) of the ones I replaced (440cc) require much Higher VE values in the map. I tried to drive and tune last night and the car was way leaner than with the lower flow 440cc injectors It also look...

Is it normal for that setting not to affect idle quality while reducing it down to 1 though? Did you get a chance to look at the data log I attached. I have an inconsistent hiccup in the idle. Do you think that my idle pulse width being about 1.2ms and my injector open time is 1ms could affect this?...

Hi guys, I have a Preassembled from DIY, MS2 v3.57 running 2.886 code on a turbo 2.4L GM engine. I have had great luck with the system, tuned great and making awesome power. I had 42LB high impendence injectors. I just swapped to 95LB low impedance injectors using the flyback circuit. I did the proc...

When I crank my engine over for the first time on a cold start, many times it will not stay running maybe 2 seconds. On the second start it always runs fine. I would like to get it to that point on the first start. Then if I start the engine hot, it cranks over and starts then the RPM drops way down...

OH yeah! sweet! Its running really good now. I just cant wait till the weather gets nice here now.

Thanks

Ok, after further investigation and about ready to pull my whole front engine cover off, I noticed a couple of groves on the timing chain cover with a 15 above one and a 0 above the other which resembled TDC. I am glad I saw this because it may have saved me a lot of time. I ran a test and am hoping...

Bummer, I don’t have any timing marks on the outer surface of my timing chain cover for reference. I am going to have to pull it all off and get inside then mark TDC on the crank shaft then put it back together then mark the cover at TDC. Then what do you recommend? I can’t get marks o...

I did some more data logs and analysis and came across an interesting issue which may have solved my question. I was doing an RPM sweeps in neutral to adjust my another ECU and noticed a strange misfire at about 3000 rpm and up. I noticed that because my map sensor value was jumping around quite a b...

Hello, I need to just confirm some settings. I am a little nervous that my ignition timing is not exactly what it says. I am a little curious about my trigger offset being 52 degrees. Does this seem right? I have played with the setting up and down from 52 and the engine runs best here. Otherwise th...

So my question earlier was a little bland. I was in a hurry. My issue is, that I have my MS2 installed but not getting any fuel delivery. I have a good rpm signal. In my reading in the megamanual, it says that LED 14 should flash each time there is an injection event. It only flashes 2 times at the ...

Getting a good cranking rpm but no fuel. GM 4 cylinder DIS ignition

What if my battery voltage drops to 9 volts and the battery low indicator in mega tune displays battery low in red back ground

S. Bretz

Would you mind filling me in on what your ignition settings are for your saturn ICM. I am having trouble getting RPM to display in megatune while I am cranking. I tried to data log while cranking too but think I messed up somewhere on that.

Thank you!

Does the the ICM from the Saturn need to be mounted to a grounded surface? I have a great spot to mount it but the surface is plastic. I wouldn't think it needs to be because there are already two ground wires in the harness. I just thought I would ask before mount it and button everything up. Thanks

The above message to my question got merged together. Any one have any Ideas corrections to what I have here? It is a 1993, 4 cylinder saturn ICM and the below is how the 2 connectors are from the factory. I have already had to repair my MSII once form a mistake, really trying to avoid that again A-...

S. Bretz, I have a questions for you since you are a saturn guy. I have been studdying the MegaSquirt Manual GM DIS section and the wire colors and the pin locations and it says • Module pin B or C - white wire - DB37 #36 (V3 main board, ignition output signal pin for V2.2), • Module pin...

Thanks a ton for your help guys! I just picked up a 1993 saturn OBD1 ICM, and coils at the junk yard for 25 bucks. I hope it works.

The engine is a 1999 OBDII chevy cavalier 2.4L LD9. So I could use one of a earlier OBD1 chevy cavalier 4 cylinder correct?

Thanks a ton for the help!

Hello, I am installing a MSII v3.57 onto a 4 cylinder chevy cavalier. I read in the manual how to wire it up and I am a little confused. The manual says to set the megasquirt up just like for HEI system and it also uses the bypass relay the same way. I understand that part. The part I am having trou...