Author Topic: M42 Engine management maps and info (Read 27426 times)

Gunni · « **Reply #30 on:** March 28, 2007, 03:17:40 AM »

It�s true but thats why it�s everybodies responsibility to be sure of there offset.
The ignition refrence is always there on all ecu�s,

an318is · « **Reply #31 on:** March 28, 2007, 06:26:43 PM »

Anyone know what the offset reference angle for the standard M42 sensor is?

Gunni · « **Reply #32 on:** March 29, 2007, 02:01:30 AM »

I�m using 90� BTDC.
While somebody else is using 124� I belive.

steve321 · « **Reply #33 on:** April 22, 2007, 03:54:51 PM »

my problem is that i cannot even get her to fire up with the MS doing fuel only, does any one have like a base map and setting for M42, i did alter the warmup enrichment alittle, and it suddenly started and ran for about 30 mins, but then died again.

steve
________
PAXIL LAWSUIT SETTLEMENTS

nuvolarossa · « **Reply #34 on:** April 23, 2007, 06:31:38 AM »

Quote from: steve321;24235

my problem is that i cannot even get her to fire up with the MS doing fuel only, does any one have like a base map and setting for M42, i did alter the warmup enrichment alittle, and it suddenly started and ran for about 30 mins, but then died again.

steve

Hi steve, do you have you wiring diagram of your MS installation? Are you using oem sensors, like throttle body sensor, or from other cars?
thank you

tim_s · « **Reply #35 on:** April 23, 2007, 07:08:36 AM »

wiring is very easy. diagrams are on the MS site http://www.megamanual.com/ms2/V3assemble.htm#ew

I shared all bosch sensors and calibrated them to the MS, although you can use GM sensors which is the easiest way.
Am playing with SMT6 and MAP at the moment, not too happy with it yet though.

Gunni · « **Reply #36 on:** April 23, 2007, 12:10:44 PM »

Tim the XMS would work well for you, even the cheaper 4cyl only version
TPS vs. RPM over MAP compensation.

bmwman91 · « **Reply #37 on:** April 23, 2007, 01:01:28 PM »

Quote from: bar73k;18441

This is the best image of the ignition map i could get.

What is this from? Is it a stand-alone, or did you manage to get it from the stock ECU chip?

I have dumped HEX files from my stock chip. What program is that you took the shot from?

vjlax18 · « **Reply #38 on:** April 24, 2007, 08:16:07 AM »

I'm stuck on a couple of items. What colors are the TPS wires? What did everyone set their crank settings to? And there is some concern as to whether the injectors should be wired 1-2/3-4 or 1-4/2-3.

tim_s · « **Reply #39 on:** April 24, 2007, 09:22:21 AM »

Quote from: Gunni;24312

Tim the XMS would work well for you, even the cheaper 4cyl only version
TPS vs. RPM over MAP compensation.

maybe. I liked megasquirt a lot, both the hardware and software are excellent.
the SMT6 I'm not so sure about. I'm finding it hard to get this conversion map from AFM to MAP perfect; it doesn't drive very well at all on the MAP sensor at the moment, but the map does need more work. I wish the software was better, this whole process could be automated.

dino245 · « **Reply #40 on:** April 24, 2007, 11:41:39 AM »

I am curently using the SMT-6 and dont like the resolution. Not enough to compensate for variations in engine speed. So I bought a Halteck E8 system and will be using it with a MAF and not the MAP. Go get a Mercedes e320 cdi MAF gives a 0-5volt signal and can flow enough to support any engine set up. Just my 2 cents.

tim_s · « **Reply #41 on:** April 24, 2007, 01:39:16 PM »

yeah, im not a big fan at the moment. Check this out:

Why does 91% deflection and 2737 rpm make the site in the red the active site? Surely it should be at 86% and 2738 rpm! I'm close to ripping the SMT6 out and buying another MS. The PP works very well for straightforward stuff - the timing control is good, and tuning AFM to optimum AFRs. i'm beginning to think i made a big mistake going for the MAP conversion, I think i was influenced by gunni's reports of good progress and various other conversions and thought it was a good idea. i'll keep tuning the voltage conversion map thing, and hopefully i can get it closer to mimicking the AFM and see how i go, but stuff like the above makes it near impossible to tune accurately.

Gunni · « **Reply #42 on:** April 24, 2007, 05:33:00 PM »

what you are supposed to do is try and get as close as you can,
after that you can drive the car and re adjust,

Why those look like that I can�t tell,

tim_s · « **Reply #43 on:** April 25, 2007, 03:29:11 AM »

yeah, i thought that was going to be the case, but I think it's going to be a bit more tricky than that. I got a lot of sites pretty good but then the transitions on the map aren't good. This causes an oscillation in the output signal that the motronic doesn't like. If I then smooth the map out its not as close to the orig output of the afm. If you look at the above the red is the PP output, the green the AFM output. As you can see the AFM output is much smoother, even though the blue (the MAP input) is pretty smooth. you can also see just how different the MAP output is from the AFM. I'm thinking MAF would be a lot easier.

Even stuff like idle isn't very good at the moment. I've only started working on it from the weekend, but it's not looking too promising. it's going to need a lot of time mapping it, and i think it will never be as good as the AFM. the car drives, but doesn't feel as good as motronic anywhere, whether in town or cruising.
As for why it keeps on choosing the wrong site, I'm completely at a loss. But it does it a lot!
Not impressed overall

Gunni, I can show you my logs and config etc if you're interested? How did your map and logs look when you converted to MAP?

Gunni · « **Reply #44 on:** April 25, 2007, 04:25:25 AM »

Can�t help you there,
I didn�t need to log all that much, just messed with the voltages and after a while both the bars where overlapping eachother,

to bad I never got around to test drive it like that

Author Topic: M42 Engine management maps and info (Read 27426 times)

vjlax18