Mega Users seabass07 Posted April 10, 2012 Mega Users Share Posted April 10, 2012 Yes it does, that's why you sort through them. It's easy to tell what is noise and what is not. But it's just preference. There are a lot of ways to end up with the same results. Link to comment Share on other sites More sharing options...
Spec B Posted April 10, 2012 Share Posted April 10, 2012 Knock sum registers knock and noise...the ecu does not distinguish between them. If all the parameters are met - the ecu will pull timing in one of 3 ways. Link to comment Share on other sites More sharing options...
iNVAR Posted April 10, 2012 Share Posted April 10, 2012 Better to log all three, ks, fbkc, flkc. And I'll explain why. If you are doing a big log, and accumulate some learned knock, the ecu will subtract that timing now, right? BUT now you're in the same range, the knock is learned, the ecu subtracts it, but you get another knock, this time fbkc. So you're subtracting both flkc AND fbkc, but knock sum is only incremented by 1. If i gave you a snip of that log, at first you'd only see one knock event. Without knowing what happened prior to this snip of the log (you would need the lv) or the entire log... Or my ignition table AND dynamic advance table to get the full and correct picture. Link to comment Share on other sites More sharing options...
Mega Users seabass07 Posted April 10, 2012 Mega Users Share Posted April 10, 2012 True. It makes less difference now, but I started doing it this way before there was a fastpolling option. I wanted as much resolution as I could get, so I did a LV prior to a log, then only logged KS. That way, I know that there is no learned knock before the run and I have the whole log. You make a good point though. It's only useful if you know there is no learned knock before hand and can monitor all of the knock after a LV. Link to comment Share on other sites More sharing options...
iNVAR Posted April 10, 2012 Share Posted April 10, 2012 Yeah, i understand. Before fp, getting a logging interval of 250ms was excellent with 7 parameters. Now i log 18 with an internal of 100ms. I'm a big advocate of fp, even with the glitch of an occasional vale being off and minor rpm inconsistencies. Link to comment Share on other sites More sharing options...
iNVAR Posted April 10, 2012 Share Posted April 10, 2012 Regarding rpm variations http://www.romraider.com/forum/viewtopic.php?f=3&t=7497&start=15 Link to comment Share on other sites More sharing options...
Mega Users seabass07 Posted April 10, 2012 Mega Users Share Posted April 10, 2012 Interesting. I don't think I ever noticed that before. I have an occasional rpm dip, but it is real and related to the torque converter lockup. I never notice rpm going down even on a single line during a pull. Strange... Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.