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Top 2GNT Technical Performance/Engine Engine Management Systems & Controllers topic #4298
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Subject: "RE: random lean condition" Previous topic | Next topic
Teamner947Jan-20-09 10:08 PM
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#4307, "RE: random lean condition"
In response to In response to 6



          

Another trick to try - is to adjust the closed-loop behavior of how wide of a range and the rate it updates the "fuel trims". How often the MS is allowed to adjust your injector pulsewidth, the percentage step, and the absolute limit, strongly affects driveability and fuel economy in closed-loop conditions. When I had my MS 5+ years ago I eventually got it down to +/- 5% at 1% steps. I'm not saying that's the exact value that you should be trying to hit; every car is different. But, under ideal conditions, your VE table should be so perfect that you shouldn't be needing any kind of EGO correction. That is, however, virtually impossible to achieve, but it's a good place to shoot for.

Bottom line - the VE table is where it's at, EGO correction is for fine tuning.


2016 WRX STi Limited (current)
2001 A4 1.8tqms (donated)
1991 GVR4 #1933 (sold)
old.dsmregistry.com/detail.php?carid=218 (dismantled)

  
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random lean condition [View all] , taclipse, Jan-16-09 07:33 AM
  RE: random lean condition, taclipse, Jan-16-09 07:35 AM, #1
RE: random lean condition, justins71, Jan-16-09 09:49 AM, #2
      RE: random lean condition, taclipse, Jan-16-09 06:19 PM, #3
           RE: random lean condition, taclipse, Jan-18-09 06:50 PM, #4
                RE: random lean condition, justins71, Jan-19-09 08:10 AM, #5
                     RE: random lean condition, taclipse, Jan-20-09 08:18 AM, #6
                          RE: random lean condition, Teamner947, Jan-20-09 10:08 PM #7
                               RE: random lean condition, taclipse, Jan-25-09 02:11 AM, #8
                                    RE: random lean condition, taclipse, Jan-26-09 07:14 AM, #9
                                         RE: random lean condition, ModeratorCorbin, Jan-26-09 07:59 PM, #10
                                              RE: random lean condition, taclipse, Jan-26-09 08:55 PM, #11
                                                   RE: random lean condition, ModeratorCorbin, Jan-27-09 07:43 PM, #12
                                                        RE: random lean condition, taclipse, Jan-29-09 10:25 AM, #13
                                                             RE: random lean condition, taclipse, Feb-03-09 08:05 AM, #14
                                                                  RE: random lean condition, taclipse, Feb-17-09 06:36 AM, #15
                                                                       RE: random lean condition, taclipse, Feb-23-09 10:29 PM, #16
                                                                            RE: random lean condition, taclipse, Mar-04-09 09:40 PM, #17
                                                                                 RE: random lean condition, taclipse, Sep-01-09 02:26 PM, #18
                                                                                      RE: random lean condition, Moderatorbullettdsm, Sep-02-09 03:32 AM, #19
                                                                                           RE: random lean condition, AdministratorStar Turbo Talon, Sep-08-09 02:14 AM, #20
                                                                                                RE: random lean condition, taclipse, Oct-02-09 12:23 PM, #21
                                                                                                     RE: random lean condition, SymTech Labs, Oct-19-09 03:24 PM, #22
                                                                                                          RE: random lean condition, 96TurboGS, Oct-19-09 07:02 PM, #23

Top 2GNT Technical Performance/Engine Engine Management Systems & Controllers topic #4298 Previous topic | Next topic
   

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