Re: EST

["Bruce Plecan" <nacelp@bright.net>]

I'd have to look (maybe a couple days), but I thought it did.
Also, remember one thing that MAFs can't do is respond to sudden
transistions, due to the heat retention of the wire, physically impossible
to do.
  I wouldn't imagine double clutching as much of a consideration at corp..
Grumpy


| Hey Bruce, this burst knock thing doesn't apply to a 165 ecm running 89
code
| does it?  When I blip the throttle for a downshift, diacom picks up a
pretty
| good burst of detonation.  I can't tell driving the car since I'm in
decell.
| Mark
| -----Original Message-----
| From: Bruce Plecan <nacelp@bright.net>
| To: gmecm@efi332.eng.ohio-state.edu <gmecm@efi332.eng.ohio-state.edu>
| Date: Sunday, January 09, 2000 2:23 PM
| Subject: Re: EST
|
|
| >
| >With a sudden application of the trottle you can at times beat the
| >accleration enrichments, and possibly some of the timing changes.  I
think
| >it's primarily the fuel.  Anyway, to compensate for this, since it might
be
| >too short for the normal knock strategy to catch, there is a "burst
knock"
| >table.  It varies some from code to code.   It has a time, and degrees
max,
| >generally.   So it can be very critical to drivilbilty in high
performance
| >applications.  I've never bothered to develope a timer for it, but on
some
| >applications, from a drivibility standpoint it seems to matter.  It's at
| the
| >I've run out of other things to do list, but can be very worthwhile
| >(seems like the lighter the car the more so), but I've had several cars
| just
| >trace knock when ya try turning it down, and some no difference.
| >Grumpy
| >
| >| What effect does adjusting "burst Knock" parameters have on overall
perf
| ?
| >I
| >| don't do much
| >| turbo stuff--so I'm in learning mode.
| >|
| >| Lyndon.
| >| -----Original Message-----
| >| From: Bruce Plecan <nacelp@bright.net>
| >| To: gmecm@efi332.eng.ohio-state.edu <gmecm@efi332.eng.ohio-state.edu>
| >| Date: January 5, 2000 3:52 PM
| >| Subject: Re: EST
| >|
| >|
| >| >
| >| >OK, try tinkering with the burst knock
| >| >Grumpy
| >| >
| >| >| Hi, Brian -
| >| >|
| >| >| At the suggestion of someone on the GMECM list, I've been trying
| >| different
| >| >| amounts of EST recovery with *great* results.  Of course, if you
| >*never*
| >| >| get any knock retard, won't do a whole lot of good.....);}E  Managed
| to
| >| >cut
| >| >| 0-60 time by 0.4 seconds (5.3 to 4.9); for me, that's a great deal.
| >| >|
| >| >| I've just been increasing the values in the F7 table @ 0x0322; seems
| to
| >| be
| >| >| no upper limit so far that adversely affects performance.  Up to
| 205.08
| >| >w/o
| >| >| any probs so far.
| >| >|
| >| >| You've no doubt done some work in this table area; anything else I
| >should
| >| >| know?  How about some of the other EST values; worth twiddling with?
| >| >| Attack is probably fine where it is (?).
| >| >|
| >| >| Just got another 6" of snow last night, so testing is probably
| >suspended
| >| >| for awhile; at least 'chipping' is indoor work mostly......
| >| >|
| >| >| Keep in touch - Barry - Sy#26
| >| >|
| >| >
| >| >
| >|
| >
|