914 megasquirt info- Scott's 1.7 Options

[toon1]

Hey, I've created a public folder for megasquirt files on my Esnips.

The address is

http://www.esnips.com/web/914megasquirt



I'm not sure if anyone is interested, but i thought it might be useful for people to post tables and files for sharing there. It is accessible to anyone, and if I add you as a member then you can upload files for others to download.

A repository of MS files maybe?
I'll leave it up as a resource if others are interested and it gets some files added.

Let me know what you think.

great idea!

[brer]

PM me with email address to be sent an invitation to the folder.

Esnips is a free web based site that works like an FTP.
Files uploaded can be linked to and downloaded freely.

If you upload, save the address to your .zip file and whenever anyone asks you can send them the link to your file which they can click and download.

end of sales pitch.

(IMG:style_emoticons/default/bye1.gif)

[Scott-thundercat]

took the advice and built in everything. i ended up taking the soldering tips which looked like flat head screw drivers- and ground them into cone shaped points- which worked perfectly. got the whole thing done last night and it tested out perfect. was actually pretty easy to build! i'm going to the junkyard today to get a TPS and air temp sensor (since the local auto parts store didnt have any)

[Scott-thundercat]

hey got it all in and wired- now to see if i can figure out some tables to get it to run! i ended up using a TPS from a nissan sentra (only one at the entire pick and pull that would work!) and an air temp gauge from a standard GM sensor. i tried to tidy up the wiring harness- but right around where i put all my fuses it gets pretty ugly. still better than the factory wiring though! also found the source of my screwed up idle- one of the injector seals was missing!

[Scott-thundercat]

okay- so went to try and start it- the fuel pump relay wont turn on- i ran a 12 V jumper straight to it- and it turned on- so MS is not sending a 12V signal- why? when i put it on the stim (and jumpered the RPM connector as it says) the fuel pump light turns on - so what gives? once i jumpered the pump relay- i got the engine to cough but rapidly flooded it due to not having a clue about where to start other than someones post on pelican parts.

well if anyone can tell me why it doesnt work i'd appreciate it- it'd be nice to have a working fuel pump!

thanks guys.

[toon1]

not sure about the pump relay, could be a transistor in the MS.

What are you afterstart enricments set at?

If they are to high it will flood the engine

[Scott-thundercat]

okay found out i wired the fuel pump relay wrong- the megasquirt acts as the ground- not the switched power- got it working now. also fixed the flooding- i get it to start after about 5 seconds of cranking- then it runs for a second and dies. played with all sorts of things- and nothing made a significant difference. i'm going to post my tables in a second for perusal.

Scott

(IMG:http://img.photobucket.com/albums/v447/Scott-thundercat/VEtable.jpg)

(IMG:http://img.photobucket.com/albums/v447/Scott-thundercat/enrichments.jpg)

(IMG:http://img.photobucket.com/albums/v447/Scott-thundercat/constants.jpg)

[toon1]

Hey Scott,


ARE YOU RUNNING RESISTORS OR PWM%???? this is VERY IMPORTANT


ARE YOU RUNNING EASY THERM?

I would turn off the 02 sensor for now. get the car running first

answer the Q's before you try to start the car again.

The reason I say this is, your AE table is off. The AE table is directly related to the req fuel #. Your req. fuel is off

ALSO, if you are not running ET( easy therm) your setting for you WE ( warmup enrichment) is wrong. These are all important for start up and keeping the engie running.

There are quite a few things wrong with the settings we will address them later. I have my lap top up with the settings I am running.


Keith

[Scott-thundercat]

pwm% i'm running

no easy therm- dont know what the resistor values are to change it. anyone got them for the CHT sensor?

i took this off some forum- it was for a hopped up 2.0- but i thought it could get me close. thanks for the feedback. will turn off the O2 sensor






ARE YOU RUNNING EASY THERM?

I would turn off the 02 sensor for now. get the car running first

answer the Q's before you try to start the car again.

The reason I say this is, your AE table is off. The AE table is directly related to the req fuel #. Your req. fuel is off

ALSO, if you are not running ET( easy therm) your setting for you WE ( warmup enrichment) is wrong. These are all important for start up and keeping the engie running.

There are quite a few things wrong with the settings we will address them later. I have my lap top up with the settings I am running.

[toon1]

OK, use these settings for WE

-40*F: 100
160
170
160
150
135
125
120
110
140*F:100

REQ. FUEL, change to 10.6

after you change the req. fuel go back to the VE table and re enter all the engine parameters and generate a new table. Right now yours is WAY to rich

PWM% set it at:75% to start
change the inj, opening time to 1.2(ms)
Batt voltage: 0.2
PWM time threshold:1.2
BArro. correction : off

Chnge the AE( afterstart enrichment): 35/250

change all the settingsI suggested and repost the VE table so I can take a look.

Keith

[Scott-thundercat]

(IMG:http://img.photobucket.com/albums/v447/Scott-thundercat/enrichments-1.jpg)
(IMG:http://img.photobucket.com/albums/v447/Scott-thundercat/constants2.jpg)
(IMG:http://img.photobucket.com/albums/v447/Scott-thundercat/VEtable2.jpg)
k heres the edited files

[toon1]

Ho are you setting your VE table?

Are you using mega tune to set the initial table?

[Scott-thundercat]

yeah i used megatune to do it. does it not look right? i got it to run for almost 2 seconds with those settings. hmmmm.... if i step on the gas it dies immediatly. wtf?

[toon1]

your KPA settings are upside down.

are you going into: settings>VE table >tools>VE specific> generate table?

This will bring up a window where you can enter all the specifics of the engine.

engine displacement 1679cc
idle charactoristics rpm: 1000 kpa:20 ( this will default to 800)
peak torque 89ft. lbs@ 2700 rpm@ kpa:100
peak hp 72hp for the eb cased motor 85 for the ea cased motor @ 4900 rpm@ 100kpa

redline charachteristics: 5500rpm @ 100 kpa

[Scott-thundercat]

okay i copied the table manually in the correct order- as it formed it like that on its own. i'll try it tommorow and see how it works. any other advice? do the other fields look okay?

[toon1]

Strange that it formed like that, maybe mine is wrongLOL

go itot the mega manuel tomorrow and see how to turn off the 02 sensor.

Other than that everything else looks ok. I won't be around tomorrow but will be back on Mon.

good luck

[Scott-thundercat]

okay started up but died nearly at the same time as all previous attempts. at this point i think it is my rediculously oversized injectors- so i am going to see if i can spruce up my stock injectors and get em to work. i originally replaced em cause i thought they were leaking- turned out it was my cold start injector. so i'll put those in and try again.


thanks for the help. when i get it running i'll post up my MSQ file and tables.

Scott

[toon1]

okay started up but died nearly at the same time as all previous attempts. at this point i think it is my rediculously oversized injectors- so i am going to see if i can spruce up my stock injectors and get em to work. i originally replaced em cause i thought they were leaking- turned out it was my cold start injector. so i'll put those in and try again.


thanks for the help. when i get it running i'll post up my MSQ file and tables.

Scott

over size injectors???? what kind are they ? what flow rate???

Dude, that changes EVERYTHING

[Scott-thundercat]

they were 340 cc VW injectors. now have the stock injectors in- no leaks- look good to go. still only starts and then dies. crap. am out of town till june 18th or so. stupid car!

[toon1]

how long does it run before it dies?