AFR goes <9 when I touch the throttle - 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 03-28-2013, 02:58 PM   #1
Senior Member
Thread Starter
 
Join Date: Nov 2007
Location: Belgium
Posts: 939
Total Cats: 59
Default AFR goes <9 when I touch the throttle

Car has just been upgraded from wasted spark to cops.
Starts fine and runs fine as long as I'm extremely gentle with the throttle.
As soon as accelerate a bit, AFR goes pig rich (<9) and car boggs. Black fumes, so it's really going rich.
Anyone care to take a look at my msq because I can't see anything obviously wrong with it.
I don't think that it's related with the cops though.
Car is a 99 miata with MS3X.
MSQ here
LOG here

Last edited by WestfieldMX5; 03-29-2013 at 08:19 AM.
WestfieldMX5 is offline   Reply With Quote
Old 03-28-2013, 03:00 PM   #2
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,899
Total Cats: 1,792
Default

dropbox sucks to share files to anyone with secure installed on computer... just upload them directly here.
Braineack is offline   Reply With Quote
Old 03-28-2013, 03:53 PM   #3
Senior Member
Thread Starter
 
Join Date: Nov 2007
Location: Belgium
Posts: 939
Total Cats: 59
Default

added files in the first post.

When cruising, afr is fine, but as soon as tps raises just a bit, dutycycle shoots up and afr goes <9.


Attached Thumbnails
AFR goes &lt;9 when I touch the throttle-rich.jpg  

Last edited by WestfieldMX5; 03-28-2013 at 04:12 PM.
WestfieldMX5 is offline   Reply With Quote
Old 03-28-2013, 04:18 PM   #4
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,370
Total Cats: 1,332
Default

Looks like it's just not tuned. PW rises in direct proportion to MAP.
Savington is offline   Reply With Quote
Old 03-29-2013, 08:05 AM   #5
Senior Member
Thread Starter
 
Join Date: Nov 2007
Location: Belgium
Posts: 939
Total Cats: 59
Default

tune is ok, turns out I had set baro at vacuum at 100% instead of 0% => twice the baro correction needed. All is well now.
WestfieldMX5 is offline   Reply With Quote
Old 03-29-2013, 07:57 PM   #6
Junior Member
iTrader: (1)
 
Join Date: Jan 2011
Posts: 377
Total Cats: 0
Default

It happens.

I changed a bunch of stuff that would require tuning and also updated my firmware.

I proceeded to spend an afternoon tuning IdleVE and having massive drift. I then remembered a little sentence about how the Gair corrections had changed. I was running my old settings as they had loaded from my old msq. I fixed it and had everything running in an hour.
3rdCarMX5 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Expected intake temps on the track? tazswing Race Prep 20 10-03-2015 12:04 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
Time to start learning and play with tuning The Gleas MEGAsquirt 3 10-01-2015 10:30 AM
Another Alternator thread ihiryu General Miata Chat 9 09-28-2015 11:22 AM
why is my car running like pewp? (tune/datalog) itsMikey MSPNP 3 09-28-2015 07:40 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 10:17 AM.