post your working cranking settings here :-) - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


MEGAsquirt A place to collectively sort out this megasquirt gizmo

Reply
 
 
 
LinkBack Thread Tools
Old 10-22-2007, 11:04 AM   #1
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: Mar 2006
Location: MA
Posts: 885
Total Cats: 2
Default post your working cranking settings here :-)

i was thinking about my starting issues on my way into work this morning, and realized that unless something was mechanically wrong, my neon will start up nearly instantly in any weather, any time of day, etc etc etc... and so does almost every single factory car i have ever owned (except my old carburated dakota... but carbs... well... yeah... )

anyway, i thought it might be worth it to try and get a collection of cranking settings from miata people, and see if we can see who's using what, and what seems to be working reliably for people in cold weather, hot weather, etc...

part of me is just curious to see how much variation there is between working setups for people. the other part is wondering why we haven't figured out a "magic recipe" yet, that with some pretty small tweaks to account for SLIGHT variations from setup to setup, would more or less just work. though, maybe with all the variations in MS construction, differences in people's board mods, injector tolerances, etc... maybe all that variation adds up to making what i'm thinking not possible.

i know everyone's car is different, but at the same time, we're all running 1.6L or 1.8L miata motors with damn the same compression, and from a startup POV, only really changing the size of the injector.

if nothing else, i'm interested to see what variations people are using, since even just between my original settings and what i've seen in DIY's and Braineak's, there are three different combinations of the top section of "cranking settings" window dropdowns... that just seems... odd...
devin mac is offline   Reply With Quote
Old 10-22-2007, 12:45 PM   #2
Junior Member
 
Join Date: Aug 2006
Location: Ridgecrest, Ca
Posts: 308
Total Cats: 0
Default

Agreed. Starting is the one area I'm really not happy with. Hot starts are fine (< 1hr cool down) and cold morning starts are fine but driving home for lunch and after work (~4 hour cool down) starting is horrible.

BTW, ASE used to be a problem for me but I mooched DIY's setting and they've worked pretty well.

I'm at work now, I'll post my setting tonight. MS2E uses percentage instead of milliseconds for cranking, though.
arga is offline   Reply With Quote
Old 10-22-2007, 12:58 PM   #3
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: Mar 2006
Location: MA
Posts: 885
Total Cats: 2
Default

yeah, we might have to break it up into people experimenting with MSII and MSI.
devin mac is offline   Reply With Quote
Old 10-23-2007, 02:12 AM   #4
Junior Member
 
Join Date: Aug 2006
Location: Ridgecrest, Ca
Posts: 308
Total Cats: 0
Default

Cranking pulse width %

F : %
-4:500
10:475
20:450
40:400
60:350
80:300
100:250
120:200
140:150
160:105
arga is offline   Reply With Quote
Old 10-23-2007, 02:16 AM   #5
Elite Member
iTrader: (13)
 
cjernigan's Avatar
 
Join Date: Oct 2006
Location: Atlanta, GA
Posts: 8,147
Total Cats: 6
Default

99 1.8 550cc highh imp injectors
req fuel 5.6
Not tuned under 60*, fires everytime hot cold warm w/e.
Name:  Picture54.png
Views: 17
Size:  15.1 KB
cjernigan is offline   Reply With Quote
Old 10-23-2007, 09:52 AM   #6
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,860
Total Cats: 1,788
Default

EDIT REMOVED

don't use mine, they were so low because of a leaky o-ring which dumped raw fuel into #4.


these are working for me with 460cc injectors. I could possibly go lower with the PWs, I need little to no fuel to start my thing.

Last edited by Braineack; 10-29-2007 at 02:25 PM.
Braineack is offline   Reply With Quote
Old 10-23-2007, 10:26 AM   #7
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: Mar 2006
Location: MA
Posts: 885
Total Cats: 2
Default

awesome, guys. thanks.

i'd post mine but right now they're just the calculations from the megamanual, based off some of my initial idle PW's from when the car actually ran.

anyone else, feel free to post, especially if you've started the car in less than warm weather :-)
devin mac is offline   Reply With Quote
Old 10-23-2007, 10:52 AM   #8
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,860
Total Cats: 1,788
Default

this has been working for me in both 40 and 80 temps. My problem is not just hot restarts after the Ait sensor has heatsoaked. it starts on a long crank, it's not perfect but it works.
Braineack is offline   Reply With Quote
Old 10-24-2007, 08:52 PM   #9
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: Mar 2006
Location: MA
Posts: 885
Total Cats: 2
Default

Name:  cranking.gif
Views: 18
Size:  18.3 KB

that worked for me tonite at 47*, 100*, 130* and immediately after a good drive (whatever that operating temp was, ~180).

this is on a 1.6L with 305CC supra injectors.
devin mac is offline   Reply With Quote
Old 10-24-2007, 10:28 PM   #10
Elite Member
iTrader: (13)
 
cjernigan's Avatar
 
Join Date: Oct 2006
Location: Atlanta, GA
Posts: 8,147
Total Cats: 6
Default

Make sure you guys post your req fuels, that makes a difference as well.
cjernigan is offline   Reply With Quote
Old 10-24-2007, 10:30 PM   #11
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,860
Total Cats: 1,788
Default

from what ive read it doesnt. since it's just a pw number. I believe MSII is a % and it's based off the req_fuel.
Braineack is offline   Reply With Quote
Old 10-24-2007, 11:39 PM   #12
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: Mar 2006
Location: MA
Posts: 885
Total Cats: 2
Default

yep. MSI, req_fuel doesn't come into play for cranking. it DOES, however, for AE enrich and Warmup enrich, i believe, though.

that said, i'm running a 9.8 req_fuel with 305's at the moment. it was a tad lower when i calculated it, but i bumped it up a bit for a better idle...
devin mac is offline   Reply With Quote
Old 10-24-2007, 11:41 PM   #13
Elite Member
iTrader: (13)
 
cjernigan's Avatar
 
Join Date: Oct 2006
Location: Atlanta, GA
Posts: 8,147
Total Cats: 6
Default

Well, i knew it counted for something, atleast now I know.
cjernigan is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
No spark while cranking? navalhawkeye MEGAsquirt 9 10-07-2015 08:10 PM
1995 Miata parts, coilover springs, PatCleary Miata parts for sale/trade 9 09-11-2015 08:53 PM
ME221 Now has Autotune and Long Term Fuel Trim Tables Motorsport-Electronics ECUs and Tuning 0 09-05-2015 09:02 AM


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 06:16 AM.