devin mac

iTrader: (2)

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...

arga

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.

devin mac

iTrader: (2)

yeah, we might have to break it up into people experimenting with MSII and MSI.

arga

Cranking pulse width %

F : %
-4:500
10:475
20:450
40:400
60:350
80:300
100:250
120:200
140:150
160:105

cjernigan

iTrader: (13)

99 1.8 550cc highh imp injectors
req fuel 5.6
Not tuned under 60*, fires everytime hot cold warm w/e.

Braineack

iTrader: (62)

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.

devin mac

iTrader: (2)

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 :-)

Braineack

iTrader: (62)

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.

devin mac

iTrader: (2)

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.

cjernigan

iTrader: (13)

Make sure you guys post your req fuels, that makes a difference as well.

Braineack

iTrader: (62)

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.

devin mac

iTrader: (2)

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...

cjernigan

iTrader: (13)

Well, i knew it counted for something, atleast now I know.