View Single Post
Old 11-24-2012, 05:48 AM   #306
roger 04 rt
Beastly Adventurer
 
roger 04 rt's Avatar
 
Joined: Nov 2011
Location: Massachusetts
Oddometer: 2,017
Quote:
Originally Posted by JohnGS1100 View Post

The numbers (value) in table, is not degress. Is a number between (0..255). Look the last number at full open thotlle at 7.500 rpn. On original map the value is 37, on mod map is 42. So the advance is higher 42-37/37 = 5/37 = 0,135 than mean +13,5%. But the real advance by mod map is higher about 5 %. Is difficult to explane this, the parameters of software and the value (0..255) is not analogic by real degress, etc the advance go on +9 degress on number 55, +10 degress on number 62 and +X degress on number 100-255.
Hi John,
I'm trained as an engineer and in the early days wrote a lot of assembly language code for control systems. Thanks for the detail but could you explain the whole algorithm? I'd like to take your data, convert the whole table to a degrees-advance table and then plot it in comparison to my measurements.

Also, have you found the Dwell table? My GS-911 reports Spark Advance and Dwell.
RB
roger 04 rt is offline   Reply With Quote