gonna try to install my ms2 on nb
 

So i finally have some time to try installing this. I have this write up brain gave to me but curious up to what step i need to do.

http://www.boostedmiata.com/MS/msq/i...uctions_TS.pdf

do i need to stop after the map sensor? Im not gona install my wibeband or ait sensor yet because i will stay stock for a few weeks until i can fab up my ic pipes and figure out a few other things. ( only car so i have to do things all at once )

If i only need to do up nto the map sensor then my install should be prety fast just needing to splice wires and tap 12v for my alt.

what would you be splicing for your alt.? ( i can't remember if I built you reg. circuit or not)

I suggest your install the WB at the same time, I should have given you I/Os to wire it into the MS box through the db15.

AIT ain't but a thing.

there are 3 wires total i have to cut, aaron sent me a write up and diagram, 1 to a 12v source the other two i cut and put them together.

" I should have given you I/Os to wire it into the MS box through the db15." what does that mean?

the db15 connector, did I not prewire it for you?

Brain, you talking about the Wideband 'input wire' into the MS?

OP is referring to what wiring changes he needs to do after he puts in an NA alternator. (which I sent him pics of what I did on my setup)

Clos/Brain... did his DIYPNP have a voltage regulating circuit built into it?

I don't think I did the alt circuit, I remember mention of an NA alt, so that makes sense.

db15 should have pigtail wires on it and a sheet with the position they are for, so you can easily wire in the WB unit.

yea i have the paper u gave me, 1 is 12v 2 is ground 3 is sensor ground 4 is wb02. what do i need to do with all that? the wb has a wire that i just put into pin 4? can i run the 12v to the same 12v add a circuit fuse i bought that im using for the alt?

there is also

fan - pad
meth- aled
vics- wled

what do i need to do with those?

and no i dont have the alt circuit because you said its a pain in the ass to tune with.

you just need to sit down.... read the LC-1 or whatever wideband instructions you have, megasquirt instructions from brain and the megasquirt manual and make sense of everything. sorta steep learning curve at first but most/all the info you need is out there.

In general, the wideband you have is going to have some sort of voltage output wire.... that's what you wire into the WBO2 wire on the back of your ECU. that's the wideband telling the ECU what your AFRs are. the wideband probably has another output, that you would run to your gauge, or whatever (unless you have LC-1 and XD-16 gauge, then its serial connection direct to gauge...ftw)

http://www.msextra.com/doc/index.html#ms2

i sat down earlier and understand the wiring alot more now. my gauge has three wires one ground on narrow and one wide. the rest of the wires just plugs into a box.

aaron how did u cut the wires for the alt. when u said not the ecu side the wires still have to be connected to the ecu but spliced together and connected to the 12v right?

I know a keep throwing this pic up...but its seriously what i keep referring to explain what I did.

Attachment 189043

I think i described it pretty im depth in a PM to you... re-read that. Basically you want to cut 3 wires about an inch away from the harness/ECU... so you will have 3 cut off, loose wires hanging off the back of the ECU.... that's fine, or tape them up or something.

The other end of those 3 wires... (Grey, Grey/red, Brown/red).... you want to connect the grey to brown/red, and then the grey/red, extend that wire onto a switched 12V source that comes on when you switch the key to "on" or whatever.

There's 3 different plugs on the back of the ECU.... all 3 of these wires are all on the same one, but I can't remember which. Check that PM I sent to you again...it's all in there, in that ECU diagram I linked.

got it now. will this work for the ecu for tuning/setting up before i crank over?

http://www.radioshack.com/product/in...odsInSession=1

not sure.... i used the one from DIYAutotune's site and only have exp with that one.

http://www.diyautotune.com/catalog/u...tune-p-67.html

for the db15, am i supposed to wire the 12v and ground to a 12v and ground or are those wires sources for 12v and ground i can tap into?

-also, where do i dl the tuning software? diy website? they also have base maps for me to run stock config?

those are sources you can tap into.

the pdf should have all that info. I have an updated one here:

http://www.boostedmiata.com/gallery2...1_0v1.pdf.html

i chose the ini that i downloaded from the write up and no go.

i dont see the one its telling me to choose in my list of ecudef either


http://i90.photobucket.com/albums/k254/los561/ecu.jpg

http://i90.photobucket.com/albums/k254/los561/ecu2.jpg


am i supposed to connect anyway after selecting the downloaded .ini file that is in the ms2 extras?

my car starts, idles if i hold the gas. now all i need to do is figure out how to tune lol. hopefully my friend can help.

that Pdf file brain linked tells you step by step pretty much how to get started....follow that.... start reading the megasquirt manuals to figure out what each table does

are you sitll having issue with the TPS registering?

no, after i loaded the base 99 startup map it registered and the config error is gone now. later today im going to do whats on the pdf and see how it goes.

the car wont idle, i changed timing settings to 10 fixed table and tried to crank it over like the pdf says. it will only stay on if i give it gas andkeep it above 1500, as soon as it gets close to 1k it drops down and stalls.

this is the msq and 2 data logs. 1 started loggin while motor was on, second i started before i cranked then let it stall.

does it help if you add more fuel in the ve fuel table 1?

i added a bit more percent between 500-1k and i didnt notice a difference

I had to add a lot of fuel in idle region initially to get it to idle. Once it was there and warmed up, I used ve table to get as stable idle as I could, then set the timing and went from there

what settings do i need to change once i put in the 460cc injectors?

just the req_fuel. lower it proportionately.

to what value?

Pi

lower the value the same percentage size increase of the new injectors over the last.

finished installing them, broke a clip for one of the injectors pulling it off but it will stay on. i am using these so i didnt need to cut the harness.

http://cgi.ebay.com/ebaymotors/Supra...Q5fAccessories


Car starts up, idles and drives fine but it has a small hiccup every couple of seconds (during idle). I tried different values for req fuel and drove around with autotune on. tbh, I dont know what to change or look for. I attached my current msq and a msl of my idle. Looking at the diagnostics section I can see the hiccup under exhaust gas oxygen (volts)

logs shows your crazy rich. only blip i can see before your marks is when it drops from 10:1 at idle to 9.x:1 at idle.

just like the ms3 carlos.
rich as fuck

lol not true!



so what do i do? lower the req fuel? shoudl i try 3-5?

my gauge is telling me 17.5 idle afr. it says lean on the gauge.

did you calibrate the MS AFR to your WB controller to match the gauge? Running that lean would cause misses. But the MS itself thinks youre rich.

what size injectors?

I think so. My gauge didnt show up on the list because its a glowshift wjdeband. I cant remeber what type i used. Are you thinking of something else? I installed 460cc rx7's

i thinks its just my afrs not hitting targets. Before when i was on stock jnjectors i was verifying that my afr readings matched the tables and they were always a few .00 off. Spot on id say. Now its at 17.2 when target is 15.3

but look at your AFRs on that log you posted...here you are saying youre idling at 17.5:1 and we (and your MS) sees you idling at 10.0:1.

you need to enter in the correct calibration for your WB if you are even going to attempt to tune and/or use EGO. Click custom, and enter in the scale that your specific EB outputs.