General MS help please - Page 2 - 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 05-22-2012, 10:28 PM   #21
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,860
Total Cats: 1,788
Default

Mine starts at 385 and goes fairly linearlly down to 100 at 235*f
Braineack is offline   Reply With Quote
Old 05-22-2012, 10:30 PM   #22
Elite Member
Thread Starter
iTrader: (2)
 
Join Date: Jun 2009
Location: Istanbul, Turkey
Posts: 2,050
Total Cats: 433
Default

Wouldn't that mean a whole lot more fuel?

I have 650s, btw.
Godless Commie is offline   Reply With Quote
Old 05-22-2012, 11:07 PM   #23
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,860
Total Cats: 1,788
Default

So? Its in % of.
Braineack is offline   Reply With Quote
Old 05-23-2012, 03:25 AM   #24
Supporting Vendor
iTrader: (10)
 
Reverant's Avatar
 
Join Date: Jun 2006
Location: Athens, Greece
Posts: 5,440
Total Cats: 198
Default

Quote:
Originally Posted by Braineack View Post
So? Its in % of.
Unfortunately, that's not entirely true. Good luck starting with 650cc EV14s and 100 at the highest temp
Reverant is offline   Reply With Quote
Old 05-23-2012, 08:55 AM   #25
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,860
Total Cats: 1,788
Default

well he aint having any luck now
Braineack is offline   Reply With Quote
Old 05-23-2012, 09:06 AM   #26
Supporting Vendor
iTrader: (10)
 
Reverant's Avatar
 
Join Date: Jun 2006
Location: Athens, Greece
Posts: 5,440
Total Cats: 198
Default

Cranking twice to start it from completely cold means that may have to add/remove 10-15% fuel, not 300-400%.
Reverant is offline   Reply With Quote
Old 05-23-2012, 09:56 AM   #27
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,860
Total Cats: 1,788
Default

This is america, go big or go home!
Braineack is offline   Reply With Quote
Old 05-23-2012, 10:05 AM   #28
Supporting Vendor
iTrader: (10)
 
Reverant's Avatar
 
Join Date: Jun 2006
Location: Athens, Greece
Posts: 5,440
Total Cats: 198
Default

Even at $4 per gallon?
Reverant is offline   Reply With Quote
Old 05-23-2012, 10:07 AM   #29
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,860
Total Cats: 1,788
Default

especially then! You gotta spend money frivilously like Greece in order to make yourself a super power.
Braineack is offline   Reply With Quote
Old 05-23-2012, 10:09 AM   #30
Supporting Vendor
iTrader: (10)
 
Reverant's Avatar
 
Join Date: Jun 2006
Location: Athens, Greece
Posts: 5,440
Total Cats: 198
Default

By being forced to buy US, German and French planes, submarines and boats by using money we are given as stimulus, right?
Reverant is offline   Reply With Quote
Old 05-23-2012, 10:10 AM   #31
Elite Member
Thread Starter
iTrader: (2)
 
Join Date: Jun 2009
Location: Istanbul, Turkey
Posts: 2,050
Total Cats: 433
Default

Quote:
Originally Posted by Reverant View Post
Even at $4 per gallon?
Hello.. It's over TEN BUCKS a gallon over here..

Also, Dimitris, there is a "cranking episode" in the log I sent you, as well.
(At the very beginning.)
Godless Commie is offline   Reply With Quote
Old 05-23-2012, 11:08 AM   #32
Supporting Vendor
iTrader: (10)
 
Reverant's Avatar
 
Join Date: Jun 2006
Location: Athens, Greece
Posts: 5,440
Total Cats: 198
Default

In that log, the engine starts (RPM > 900) in 0.8 seconds.
Reverant is offline   Reply With Quote
Old 05-24-2012, 08:12 PM   #33
Elite Member
Thread Starter
iTrader: (2)
 
Join Date: Jun 2009
Location: Istanbul, Turkey
Posts: 2,050
Total Cats: 433
Default

OK, I bumped the cranking PW by about %15-20 across the board, and it made a visible difference.

I will add another %10 and try it one more time. (Now that the engine is cold again)

Oh, I never see the MIL coming on. Isn't it supposed to?
Godless Commie is offline   Reply With Quote
Old 05-24-2012, 08:56 PM   #34
Elite Member
Thread Starter
iTrader: (2)
 
Join Date: Jun 2009
Location: Istanbul, Turkey
Posts: 2,050
Total Cats: 433
Default

Very cool progress!

Increasing fuel by another %10 made it better.

And, increasing cranking advance from 6 to 12 degrees made it perfect!
Godless Commie is offline   Reply With Quote
Old 05-24-2012, 09:01 PM   #35
Elite Member
Thread Starter
iTrader: (2)
 
Join Date: Jun 2009
Location: Istanbul, Turkey
Posts: 2,050
Total Cats: 433
Default

Here is the final version of my cranking table:
(with 12 degrees of cranking advance)
Attached Thumbnails
General MS help please-cranking-final.png  
Godless Commie is offline   Reply With Quote
Old 05-25-2012, 02:05 AM   #36
Supporting Vendor
iTrader: (10)
 
Reverant's Avatar
 
Join Date: Jun 2006
Location: Athens, Greece
Posts: 5,440
Total Cats: 198
Default

You don't want that much advance during cranking as you may kick back the starter.
Reverant is offline   Reply With Quote
Old 05-25-2012, 07:34 AM   #37
Elite Member
Thread Starter
iTrader: (2)
 
Join Date: Jun 2009
Location: Istanbul, Turkey
Posts: 2,050
Total Cats: 433
Default

Hmm. The car seems to love it, tho.
I'll try it a couple more times before I bump it down.
Godless Commie is offline   Reply With Quote
Old 05-25-2012, 07:38 AM   #38
Supporting Vendor
iTrader: (10)
 
Reverant's Avatar
 
Join Date: Jun 2006
Location: Athens, Greece
Posts: 5,440
Total Cats: 198
Default

If you don't have a problem with starting, then leave it as is. However, my experience with 10* of cranking advance is that it randomly kicks the starter back. It depends on your actual cranking speed etc. For example it happens a lot more if your battery is not 100% up to the job.
Reverant is offline   Reply With Quote
Old 05-25-2012, 08:24 AM   #39
Elite Member
Thread Starter
iTrader: (2)
 
Join Date: Jun 2009
Location: Istanbul, Turkey
Posts: 2,050
Total Cats: 433
Default

I understand completely.
I have quite a bit of hands on experience on engines, especially ignition and engine management systems, and bumping the advance has always proved a better starting scheme for me.
What I don't understand is the negative prop I have received for reporting that increased pw indeed helped starting the engine, a couple posts ago...
Godless Commie is offline   Reply With Quote
Old 05-25-2012, 09:05 AM   #40
Supporting Vendor
iTrader: (10)
 
Reverant's Avatar
 
Join Date: Jun 2006
Location: Athens, Greece
Posts: 5,440
Total Cats: 198
Default

Quote:
Originally Posted by Godless Commie View Post
What I don't understand is the negative prop I have received for reporting that increased pw indeed helped starting the engine, a couple posts ago...
What negative prop?

Btw, do you actually have a check engine light on your gauge cluster?
Reverant is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
9" or 9.5" for 245s? d k Race Prep 39 03-05-2016 07:45 PM
Software/IT types/Joe P, step inside please z31maniac Insert BS here 13 09-22-2015 03:59 PM
In what world... curly MEGAsquirt 11 09-22-2015 12:54 PM
Mixing tires.... wannafbody Wheels and Tires 1 09-15-2015 11:26 PM
Project DDoS: '99 "Budget" boost build ProjectDDoS Build Threads 1 09-09-2015 02:52 PM


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 08:59 PM.