MEGAsquirt A place to collectively sort out this megasquirt gizmo

a little hard to start

Thread Tools
 
Search this Thread
 
Old 10-11-2013, 11:19 AM
  #1  
Junior Member
Thread Starter
 
6speed's Avatar
 
Join Date: Aug 2013
Location: Ohio
Posts: 91
Total Cats: -6
Default a little hard to start

I've got an MS3 basic and I've street tuned it with auto-tune and I have my timing table where I want it. The car is running really good with just a slight dip in the idle when coming to a stop. The only thing that is really bugging me is starting the car up. It seems like it takes it a long time to catch and fire up. Anyone have any insight to getting it back to ane OEM like start-up? The car is a 2000 1.8 NB with a rev built MS3. I hate to bug Rev with every little problem so I thought I'd ask on here first.
6speed is offline  
Old 10-11-2013, 11:22 AM
  #2  
Elite Member
iTrader: (2)
 
thenuge26's Avatar
 
Join Date: Aug 2012
Location: Indianapolis
Posts: 3,267
Total Cats: 239
Default

Why don't you start by telling us what you have done to tune startup. Anything? Or are you just running off the base settings?

I also have the idle dip when coming to a stop, I have done almost nothing as far as tuning idle though short of tuning the idle VE table.
thenuge26 is offline  
Old 10-11-2013, 11:26 AM
  #3  
Junior Member
Thread Starter
 
6speed's Avatar
 
Join Date: Aug 2013
Location: Ohio
Posts: 91
Total Cats: -6
Default

As far as start up I am running the settings rev sent it with.
6speed is offline  
Old 10-11-2013, 11:28 AM
  #4  
Elite Member
iTrader: (2)
 
thenuge26's Avatar
 
Join Date: Aug 2012
Location: Indianapolis
Posts: 3,267
Total Cats: 239
Default

Yeah you're gonna have to tune it to get it to start and idle well. Try searching here or going to MSExtra.com to read about tuning startup and idle. The MSExtra forums are great also.

I set up 2 search engines in chrome to use Google to search here and MSExtra. You can just google 'site:msextra.com <your search here>' to get better results than the forum search.
thenuge26 is offline  
Old 10-11-2013, 01:13 PM
  #5  
Boost Czar
iTrader: (62)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,494
Total Cats: 4,080
Default

Originally Posted by 6speed
just a slight dip in the idle when coming to a stop.
increase your dashpot a little. what is it at now?
or
increase the return fuel at X RPM value in overrun. what is it at now?


It seems like it takes it a long time to catch and fire up. Anyone have any insight to getting it back to ane OEM like start-up?
tune startup.
Braineack is offline  
Old 10-11-2013, 01:30 PM
  #6  
Elite Member
iTrader: (11)
 
miatauser884's Avatar
 
Join Date: Feb 2009
Posts: 2,959
Total Cats: 11
Default

Originally Posted by 6speed
I've got an MS3 basic and I've street tuned it with auto-tune and I have my timing table where I want it. The car is running really good with just a slight dip in the idle when coming to a stop. The only thing that is really bugging me is starting the car up. It seems like it takes it a long time to catch and fire up. Anyone have any insight to getting it back to ane OEM like start-up? The car is a 2000 1.8 NB with a rev built MS3. I hate to bug Rev with every little problem so I thought I'd ask on here first.
Post your cranking settings and idle settings. It may just be your cranking rpm. How many degrees of timing are you running during cranking?
miatauser884 is offline  
Old 10-11-2013, 05:18 PM
  #7  
Elite Member
iTrader: (2)
 
thenuge26's Avatar
 
Join Date: Aug 2012
Location: Indianapolis
Posts: 3,267
Total Cats: 239
Default

Originally Posted by Braineack
increase your dashpot a little. what is it at now?
or
increase the return fuel at X RPM value in overrun. what is it at now?
Question about this, since I feel like increasing my dashpot adder would solve the 'almost stalling at stops' but increase my problem of 'idle at 2200rpm after I get off the highway'. I'm guessing I'm using 'last known value' and the last known value was when the car was still cold (before I got on the highway). Is it possible to tune that out or should I switch to the initial values table and start tuning that?
thenuge26 is offline  
Old 10-11-2013, 08:15 PM
  #8  
Junior Member
Thread Starter
 
6speed's Avatar
 
Join Date: Aug 2013
Location: Ohio
Posts: 91
Total Cats: -6
Default

My dashpot adder is set to 3.1. I can't find the "return fuel in overrun".
6speed is offline  
Old 10-18-2013, 03:12 PM
  #9  
Junior Member
Thread Starter
 
6speed's Avatar
 
Join Date: Aug 2013
Location: Ohio
Posts: 91
Total Cats: -6
Default

I had the time to tinker a little today and I found that it really helped to drop my cranking rpm from 300 to about 225. The car catches and fires quickly now.
6speed is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Full_Tilt_Boogie
Build Threads
84
04-12-2021 04:21 PM
tazswing
Race Prep
20
10-03-2015 11:04 AM
The Gleas
MEGAsquirt
3
10-01-2015 09:30 AM
mx592
Suspension, Brakes, Drivetrain
1
10-01-2015 12:45 AM
zephyrusaurai
Meet and Greet
2
09-28-2015 10:59 PM



Quick Reply: a little hard to start



All times are GMT -4. The time now is 11:41 AM.