Barometric Correction(for cars tuned at sea level) - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to   Members

MEGAsquirt A place to collectively sort out this megasquirt gizmo

LinkBack Thread Tools
Old 11-20-2012, 05:43 PM   #1
Supporting Vendor
Thread Starter
iTrader: (1)
Join Date: May 2010
Location: San Diego
Posts: 491
Total Cats: 39
Default Barometric Correction(for cars tuned at sea level)

I've started to notice the past couple of track days my AFRs are .5-.8 richer than at sea level. I understand as altitude increases , air becomes less dense and fuel corrections need to be made. Seeing as I tuned the car in San Diego at sea level this would make sense.

However, I was under the impression when you cycle the power and the MS takes the initial map reading and non-linear baro correction table are set to zero it should account for the current baro reading. This does not seem to be the case or I do not properly understand these settings.

I am running an MS2 built some time ago that I bought from shuiend and it is running a much older 3.0.3 pre-alpha firmware. Would upgrading the firmware to the current version or Gslender mod be helpful in correcting this issue? Or is upgrading the map sensor to the "Map Daddy" option the true solution for real time correction.
Lincoln Logs is offline   Reply With Quote
Old 11-20-2012, 06:02 PM   #2
Senior Member
iTrader: (5)
Join Date: Sep 2009
Location: Lompoc, CA
Posts: 579
Total Cats: 12

Go read the baro correction sensor install thread from just a few days ago. The short answer is that the automatic correction for barometric correction is wrong and pulls out too much fuel. There is a more detailed explanation in the other thread.
baron340 is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
Fab9Tuning's NC MX-5 Turbo Kit Discussion- EFR/Garrett V-Band FAB Prefabbed Turbo Kits 216 03-22-2017 05:00 PM
1.8, C30-74 Rotrex, 9psi, 235WHP/190WTQ (E85) Lincoln Logs Dynos and timesheets 4 09-23-2015 01:26 PM
ms2e No Rpm Signal Dobzeh ECUs and Tuning 5 09-17-2015 03:56 PM
Interpreting Deatchwerks Dead Times from Battery Wizard compuw22c MEGAsquirt 0 09-14-2015 07:08 PM
ME221 Now has Autotune and Long Term Fuel Trim Tables Motorsport-Electronics ECUs and Tuning 0 09-05-2015 09:02 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 10:51 AM.