First Winter with 550's cranking - 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 10-04-2008, 05:57 PM   #1
Senior Member
Thread Starter
iTrader: (8)
 
turbobluemiata's Avatar
 
Join Date: Aug 2006
Location: Springfield, IL
Posts: 1,019
Total Cats: 0
Default First Winter with 550's cranking

Well this is my first "winter" with the 550's and the past few nights its got down into the high 30's and my cranking settings suck and the past 2 days I've been tweaking them some.but only get 1 chance a day and I have to work early as hell in the morning and the miata being the DD heres my settings that start the car after a while the 60F up are good but when under that it blows! someone please post 550's with cranking and afterstart settings tested as low as possible maybe from last year, or if you live in Alaska
Attached Images
File Type: bmp 1.bmp (660.1 KB, 530 views)
File Type: bmp 5.bmp (769.6 KB, 524 views)
turbobluemiata is offline   Reply With Quote
Old 10-06-2008, 05:24 AM   #2
Senior Member
Thread Starter
iTrader: (8)
 
turbobluemiata's Avatar
 
Join Date: Aug 2006
Location: Springfield, IL
Posts: 1,019
Total Cats: 0
Question

no one?
turbobluemiata is offline   Reply With Quote
Old 10-06-2008, 06:02 AM   #3
Elite AbsurdFlow Member
 
Laur3ns's Avatar
 
Join Date: Mar 2008
Location: Enschede, NL
Posts: 2,058
Total Cats: 11
Default

I won't post my table as it's not perfect for other than warm starts. Is your problem cranking takes too long or the car coughs then dies?
Laur3ns is offline   Reply With Quote
Old 10-06-2008, 06:12 AM   #4
Senior Member
Thread Starter
iTrader: (8)
 
turbobluemiata's Avatar
 
Join Date: Aug 2006
Location: Springfield, IL
Posts: 1,019
Total Cats: 0
Default

Well under 60F it does both, but I can't tell if increasing or decreasing is affecting anything. With only 1 try a day.... part of me thinks im putting to much in cranking but, then when I lower that It wont crank forever then when it does runs like the plugs are fouled. Then when I change it by .1 or .2 it still takes a while to crank and pops which from what Ive read means to high of cranking PW's Im tired of messing with it right before I go to work, and making me late etc... But anything over 60F is perfect instant start-up
turbobluemiata is offline   Reply With Quote
Old 10-06-2008, 09:36 AM   #5
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,847
Total Cats: 1,788
Default

pops mean it's too high and you're igniting large amounts of fuel.

the next morning you try it, first try starting low, like try 4.5, then work it up. if you start high, you flood the cylinders and it's almost impossible to start after that point without drying the cambers out.
Braineack is offline   Reply With Quote
Old 10-09-2008, 09:21 PM   #6
Senior Member
iTrader: (2)
 
Join Date: Jun 2006
Location: Springfield, NJ
Posts: 670
Total Cats: 0
Default

I'm going through the same issue now but with 460 injectors. First winter with the MS in my '04.



The coldest morning I've had so far here in NJ is mid-40s. Car started on the second try. Not perfect but getting there.

Paul says maybe I made the CPW numbers a tenth or two too high, causing the fuel to be harder to compress (or something like that).
evank is offline   Reply With Quote
Old 10-27-2008, 11:12 PM   #7
Newb
iTrader: (1)
 
Join Date: Apr 2007
Location: Evergreen, CO
Posts: 16
Total Cats: 0
Default

Mine cranks/starts fine (460s) but dies after 5 seconds or so on the first start. On the second start, it will stay lit. It does this every single time unless the ambient temps are real warm. The other thing it does is after it's started; I cannot touch the gas for some 30 seconds or so, otherwise it bogs and dies. After that, I can usually gently coax the RPMs up, and once over about 3,000 RPMs it will take any amount of throttle. After a minute or two of allowing the motor to warmup, the off-idle bog goes away.

I guess I need to spend some time with the warmup and/or after-start enrichments, but adjusting them either way doesn't seem to make a profound difference in behavior.

evank: Your cranking PW are quite a bit larger than mine. I think you could probably stand to pull several tenths from 0F and up.
pace is offline   Reply With Quote
Old 10-27-2008, 11:24 PM   #8
Elite Member
iTrader: (5)
 
Join Date: Mar 2007
Location: NYC
Posts: 1,997
Total Cats: 1
Default

I'm using paul's setting with great success so far down into the 30F's
johndoe is offline   Reply With Quote
Old 10-28-2008, 10:54 AM   #9
Elite Member
iTrader: (9)
 
Saml01's Avatar
 
Join Date: Jul 2007
Location: NYC
Posts: 5,730
Total Cats: 2
Default

Mine are less than what Pauls are and my car starts perfectly down to 0 on the first try.

Ill post when i get home.
Saml01 is offline   Reply With Quote
Old 10-28-2008, 12:43 PM   #10
Elite Member
iTrader: (21)
 
paul's Avatar
 
Join Date: Jun 2006
Location: Point Pleasant, NJ
Posts: 2,957
Total Cats: 2
Default

0? It hasn't been down to 0 F since you squirted your car Sam so WTF are you talking about?
paul is offline   Reply With Quote
Old 10-28-2008, 02:01 PM   #11
Elite AbsurdFlow Member
 
Laur3ns's Avatar
 
Join Date: Mar 2008
Location: Enschede, NL
Posts: 2,058
Total Cats: 11
Default

To all: post you inj. opening time too
Laur3ns is offline   Reply With Quote
Old 10-28-2008, 04:40 PM   #12
Elite Member
iTrader: (9)
 
Saml01's Avatar
 
Join Date: Jul 2007
Location: NYC
Posts: 5,730
Total Cats: 2
Default

Quote:
Originally Posted by paul View Post
0? It hasn't been down to 0 F since you squirted your car Sam so WTF are you talking about?
I squirted it before the winter of last year and started it throughout the winter. Unless you are saying the temperatures never got that low between november and march of 07/08.
Saml01 is offline   Reply With Quote
Old 10-28-2008, 05:00 PM   #13
Elite Member
iTrader: (15)
 
patsmx5's Avatar
 
Join Date: Aug 2007
Location: Houston, TX
Posts: 8,796
Total Cats: 248
Default

My cold start settings suck. So I just copied Paul's that johndoe posted and I'll report back tomorrow. I got remote start and every morning it takes 2 tries to crank when it's below ~70*F. My old numbers were definately smaller then Paul's, so maybe this will fix it.
patsmx5 is offline   Reply With Quote
Old 10-28-2008, 08:03 PM   #14
Elite Member
iTrader: (3)
 
Mach929's Avatar
 
Join Date: Oct 2004
Location: lansdale PA
Posts: 2,500
Total Cats: 0
Default

mine usually starts ok, did so down to 27 the other day, sometimes(once or twice a week) though it will stop cranking for a split second like something's locked the motor and then continue to crank and start. my problem is my warmup sucks, even in the summer my idle goes from 1000-2000 until it's fully warmed, then it's fine.
Mach929 is offline   Reply With Quote
Old 10-28-2008, 08:05 PM   #15
Elite Member
iTrader: (15)
 
patsmx5's Avatar
 
Join Date: Aug 2007
Location: Houston, TX
Posts: 8,796
Total Cats: 248
Default

Quote:
Originally Posted by Mach929 View Post
mine usually starts ok, did so down to 27 the other day, sometimes(once or twice a week) though it will stop cranking for a split second like something's locked the motor and then continue to crank and start. my problem is my warmup sucks, even in the summer my idle goes from 1000-2000 until it's fully warmed, then it's fine.
Both the spin, spin, STOP, spin crank and the up down up down problem are both timing related. What timing map do you run?
patsmx5 is offline   Reply With Quote
Old 10-28-2008, 08:20 PM   #16
Senior Member
iTrader: (2)
 
Join Date: Jun 2006
Location: Springfield, NJ
Posts: 670
Total Cats: 0
Default

Quote:
Originally Posted by patsmx5 View Post
Both the spin, spin, STOP, spin crank and the up down up down problem are both timing related. What timing map do you run?
I have the same issue(s).

What timing map do I run ..... hmmm ... how do I find out?
evank is offline   Reply With Quote
Old 10-28-2008, 08:29 PM   #17
Elite Member
iTrader: (21)
 
paul's Avatar
 
Join Date: Jun 2006
Location: Point Pleasant, NJ
Posts: 2,957
Total Cats: 2
Default

Quote:
Originally Posted by Saml01 View Post
I squirted it before the winter of last year and started it throughout the winter. Unless you are saying the temperatures never got that low between november and march of 07/08.
Temps never got that low in this area.
paul is offline   Reply With Quote
Old 10-28-2008, 08:50 PM   #18
Elite Member
iTrader: (9)
 
Saml01's Avatar
 
Join Date: Jul 2007
Location: NYC
Posts: 5,730
Total Cats: 2
Default

Quote:
Originally Posted by paul View Post
Temps never got that low in this area.
According to the weather record they did here.
Saml01 is offline   Reply With Quote
Old 10-28-2008, 08:53 PM   #19
Elite Member
iTrader: (15)
 
patsmx5's Avatar
 
Join Date: Aug 2007
Location: Houston, TX
Posts: 8,796
Total Cats: 248
Default

Quote:
Originally Posted by evank View Post
I have the same issue(s).

What timing map do I run ..... hmmm ... how do I find out?
lol. Do you have megatune and a laptop? Are you familiar with megatune/
patsmx5 is offline   Reply With Quote
Old 10-28-2008, 08:57 PM   #20
Senior Member
iTrader: (2)
 
Join Date: Jun 2006
Location: Springfield, NJ
Posts: 670
Total Cats: 0
Default

Yup. booting it right now ... Prof. Paul did a good job teaching me how to log, tune, change boost duty targets, tweak crank pulse widths, etc. ... but we didn't get to the unit on timing maps yet.
evank is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Need help - Stock Balancer and Fastforward overlay pulleys Frank_and_Beans Supercharger Discussion 13 09-12-2016 09:17 PM
WTB MP62 (Hotside) (NB2) Rick02R WTB 3 01-03-2016 08:18 PM
Back to Stock Part Out!! Turbo Parts, MS2 Enhanced 01-05, Suspension, and MOAR! StratoBlue1109 Miata parts for sale/trade 16 10-02-2015 10:39 AM
Missing/knock at idle, can someone point me in the right direction? Mikel MEGAsquirt 4 09-28-2015 05:46 PM
Got bad Crank Angle Sensor and Random Misfire codes, but runs fine. Greasyman General Miata Chat 2 09-28-2015 11:44 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 09:04 AM.