Dev Blog
Forum
Wiki
About
NefMoto
>
Technical
>
Reverse Engineering
>
High Byte Low Byte MAF table
Pages: [
1
]
« previous
next »
Author
Topic: High Byte Low Byte MAF table (Read 6197 times)
tightmopedman9
Jr. Member
Karma: +0/-2
Offline
Posts: 45
High Byte Low Byte MAF table
« on: October 17, 2013, 06:09:53 PM »
Motronic 4.4 (VOLVO) stores the MAF to voltage table as a high/low byte table. I've installed a larger MAF and scaled the old values by the increase in cross sectional area. This gave me a poor approximation that I would like to improve upon. Unfortunately, I had to do the calculations and enter the values by hand, something I'm not interested in doing 20 or more times. Other than writing a program in C, Visual Basic or MatLab is there an easier way to do this?
Logged
tightmopedman9
Jr. Member
Karma: +0/-2
Offline
Posts: 45
Re: High Byte Low Byte MAF table
« Reply #1 on: October 20, 2013, 06:19:09 PM »
So I figured this out with just some good 'ole excel.
I calculated my MAF table, then converted to hex with HEX2BIN(A1), from there I added the appropriate amount of leading zeros with CONCATENATE("0000",A2). I then formatted the cells into text and broke the string into high and low bytes with LEFT(A2,2) and RIGHT(A2,2). From there I could just copy and paste it into my hex editor. YEA!
Logged
krazydbiker
Full Member
Karma: +4/-1
Offline
Posts: 202
Re: High Byte Low Byte MAF table
« Reply #2 on: October 27, 2013, 06:08:58 PM »
i was reading on your progress on volvospeed, good stuff, you did a ton of work on figuring out how to get those maf sizes to work, i take it those lean spots are gone?
Logged
littco
Hero Member
Karma: +52/-7
Offline
Posts: 903
Re: High Byte Low Byte MAF table
« Reply #3 on: October 28, 2013, 01:52:56 AM »
Would it not be easier to use tuner pro?
Create a new table with the axis and table valves from the map, then just modify the table according to you needs?
Logged
maZer.GTi
Full Member
Karma: +68/-6
Offline
Posts: 246
Re: High Byte Low Byte MAF table
« Reply #4 on: November 01, 2013, 03:07:58 PM »
Quote from: littco on October 28, 2013, 01:52:56 AM
Would it not be easier to use tuner pro?
Create a new table with the axis and table valves from the map, then just modify the table according to you needs?
If you have some wishes i can insert some stuff you need into mafadjust tool.
Logged
Pages: [
1
]
Print
« previous
next »
Jump to:
Please select a destination:
-----------------------------
General
-----------------------------
=> Introductions
=> General Discussion
-----------------------------
Noob Zone
-----------------------------
=> Noob Questions
=> Noob Guides and FAQs
-----------------------------
Technical
-----------------------------
=> NefMoto Software
=> Tuning
===> Documents & Helpers & How To's
===> Community Projects
=> Diagnostics
=> Flashing and Chipping
=> Cluster and Immobilizer
===> ECU EEPROM images
===> Original Cluster dumps
===> Original Cluster dump requests
=> Data Logging
=> Reverse Engineering
=> Communication Protocols
-----------------------------
ECU Files
-----------------------------
=> ECU Definition Files
===> ECU Definition File Requests
=> Original ECU Files
===> Original ECU File Requests
=> Checksum Update Requests
-----------------------------
Vehicles
-----------------------------
=> Vehicle Tech
=> Project Cars
-----------------------------
Regional
-----------------------------
=> Canadian Regional Discussion
=> US Regional Discussion
-----------------------------
Classifieds
-----------------------------
=> For Sale
=> Wanted
=> Services
-----------------------------
Miscellaneous
-----------------------------
=> Off Topic
=> Forum Tech Support
=> Bizarro Messages Posted by Bots and Spammers
Navigation
Home
Help
Login
Register
Personal Tools
September 28, 2024, 04:10:21 PM
Welcome,
Guest
. Please
login
or
register
.
Did you miss your
activation email?
1 Hour
1 Day
1 Week
1 Month
Forever
Login with username, password and session length
Search
Advanced Search
Loading...