Notices
Engine Performance This section is for discussion on all engine building related questions.
Sponsored by:
Sponsored by: KPower

NA crank trigger wheel sensor on a NB?

Old Mar 22, 2011 | 08:56 AM
  #21  
richyvrlimited's Avatar
Elite Member
iTrader: (1)
 
Joined: Jun 2006
Posts: 2,642
Total Cats: 42
From: Warrington/Birmingham
Default

But that isn't a Megasquirt thing, it's an ECU in general thing.

How can you expect a dumb device to 'know' the size of your injectors unless you tell it?
Old Mar 22, 2011 | 09:39 AM
  #22  
Madvillain's Avatar
Thread Starter
Junior Member
iTrader: (1)
 
Joined: Nov 2010
Posts: 102
Total Cats: 0
Default

so any suggestions on where to read up on helping me with this start up?

as Sav said, I probably have to alter the VE tables or retune the coldstart.

time to start searching through the MS section for answers.

thanks for all the help.
Old Mar 22, 2011 | 10:48 AM
  #23  
richyvrlimited's Avatar
Elite Member
iTrader: (1)
 
Joined: Jun 2006
Posts: 2,642
Total Cats: 42
From: Warrington/Birmingham
Default

Change the Req_fuel number to account for your bigger injectors, as you have MSII everything else will scale more or less.

It's all in the manual. http://www.msextra.com/doc/index.html
Old Mar 22, 2011 | 02:44 PM
  #24  
Savington's Avatar
Former Vendor
iTrader: (31)
 
Joined: Nov 2006
Posts: 15,442
Total Cats: 2,106
From: Sunnyvale, CA
Default

Originally Posted by Madvillain

time to start searching through the MS section for answers.

thanks for all the help.


http://www.megamanual.com/mtabcon.htm
Old Mar 22, 2011 | 03:14 PM
  #25  
richyvrlimited's Avatar
Elite Member
iTrader: (1)
 
Joined: Jun 2006
Posts: 2,642
Total Cats: 42
From: Warrington/Birmingham
Default

Originally Posted by Savington
The link I posted is more appropriate, the megamanual is B&G code based, the MSExtra URL is for the Extra code bases which we all use.
Old Mar 22, 2011 | 06:23 PM
  #26  
fooger03's Avatar
Elite Member
iTrader: (2)
 
Joined: Jan 2009
Posts: 4,149
Total Cats: 230
From: Columbus, OH
Default

First, get a mcdonalds straw and sip up all of the unburnt fuel in the cylinders; then get on your knees and praise god you didn't hydrolock :P

Then set up your ECU as mentioned above
Old Mar 27, 2011 | 02:27 PM
  #27  
Joe Perez's Avatar
Boost Pope
iTrader: (8)
 
Joined: Sep 2005
Posts: 34,402
Total Cats: 7,523
From: Chicago. (The less-murder part.)
Default

Req_Fuel needs to be decreased. Formula (approximately) is New Reqfuel = Old ReqFuel * (old injectorsize / new injectorsize).

Cranking PW also need to be trimmed by the same ratio.

(Does MS2 specify cranking PW in absolute times like MS1? I can't remember.)

EDIT: No, it does not. It's in %, so you can probably leave cranking PW alone.

Might need to trim priming PW, though.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Full_Tilt_Boogie
Build Threads
84
Apr 12, 2021 04:21 PM
StratoBlue1109
Miata parts for sale/trade
21
Sep 30, 2018 01:09 PM
mx592
Suspension, Brakes, Drivetrain
1
Oct 1, 2015 12:45 AM
Greasyman
General Miata Chat
2
Sep 28, 2015 10:44 AM


Thread Tools
Search this Thread

All times are GMT -4. The time now is 08:15 AM.