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Beer99C5
October 16th, 2008, 02:21 AM
What can this KR be....??? Beginning of run hits 9.9 and then trails off???


12.9 leaving soft (first run having recently changed out Valve Springs---had 4 broken outter and 1 broken inner valve springs :doh2:)
http://www.retrorelics.net/jim/Boards/EFILive/Oct151strun.jpg


12.7
http://www.retrorelics.net/jim/Boards/EFILive/Oct152ndrun.jpg


12.0 50 shot dry intermittently spraying :doh2:
http://www.retrorelics.net/jim/Boards/EFILive/Oct153rdrun.jpg
joecar
October 16th, 2008, 04:38 AM
Hmmm... it looks consistent... check the following:
- oil is now getting past PCV catch can.
- spark plug gap is now bigger than 0.040" (I don't think this is it).
- loss o f coolant.
- air leak.
- other.
SSpdDmon
October 16th, 2008, 07:27 AM
Might be time for new knock sensors too...my '99 needs 'em. :(
TFZ_Z06
October 16th, 2008, 06:18 PM
If you are hitting the juice low rpm and at almost 30deg spark, thats likely it.
I never engage the juice below 3000rpm. I see your nitrous pressure is ok, but were you using nitro at low rpm?
Beer99C5
October 17th, 2008, 12:34 AM
If you are hitting the juice low rpm and at almost 30deg spark, thats likely it.
I never engage the juice below 3000rpm. I see your nitrous pressure is ok, but were you using nitro at low rpm?

Spray was set for 2800 Dry

Stupid Question could the KR be actually the TC kicking in? Seems the KR would be a function of RPM / load, and it looks like it is tapered off at a steady rate...As well each of the three runs it went to 9.9 initially...


Joe I will check the Catch can, the plug gap are .035 fresh set of plugs added this week.
SSpdDmon
October 17th, 2008, 02:33 AM
Stock cam? Where are your burst knock settings?
Beer99C5
October 17th, 2008, 03:04 AM
Stock cam? Where are your burst knock settings?

Cam is Comp Cams 224/228 @ 114 .58x lift

I have to Download the tune, it was street tuned with the bad springs on it when I got my driveline done (RPM level 5 A-4 Yank 3000 and ZO6 rear).

What is Burst Knock?

http://www.retrorelics.net/jim/Boards/EFILive/BKnock1.jpg

http://www.retrorelics.net/jim/Boards/EFILive/Bknock2.jpg

http://www.retrorelics.net/jim/Boards/EFILive/Bknock3.jpg

Looks like my cylair goes from .15 to .49 and the KR kicks in...??? That does exceed the .030029 in the delta table
SSpdDmon
October 17th, 2008, 03:41 AM
Burst knock pulls timing on throttle tip-in. Some people believe it to be unnecessary, and therefore disable it. I personally disagree.

Shoot me a copy of your tune and I'll see what I can see when I get a minute this weekend. You may just have too much timing. SAJ79 at aol dot com.
TFZ_Z06
October 17th, 2008, 04:07 AM
You might have to log TCC State and see if its on or not, at least then you will know its throwing retard in or not.
SSpdDmon
October 17th, 2008, 06:50 AM
You might have to log TCC State and see if its on or not, at least then you will know its throwing retard in or not.
Yeah - it's a little confusing...

TC - Traction Control
TC - Torque Converter
TCC - Torque Converter Clutch

Who's talking about what?
joecar
October 17th, 2008, 06:53 AM
I think he means the last one... (yeah, those acronyms are over-abused...:doh2:).

Log these 2 pids: GM.TCCMODE and GM.GEAR (if channel count goes above 24, delete 1 or 2 other pids).
TFZ_Z06
October 17th, 2008, 02:39 PM
Yeah - it's a little confusing...

TC - Traction Control
TC - Torque Converter
TCC - Torque Converter Clutch

Who's talking about what?

:doh2: Thanks. I have to look closer at those acronyms. I was referencing the
TC Status, Active/Inactive.
joecar
October 17th, 2008, 02:47 PM
lol...:hihi:... see what I mean...:hihi:
TFZ_Z06
October 17th, 2008, 02:54 PM
lol...:hihi:... see what I mean...:hihi:

and another :doh2: for me. I just noticed in the Spark options there is

GM.EST_TRAC_DMA, the estimated traction control spark contribution.
joecar
October 17th, 2008, 05:08 PM
Yeah, EST stands for Electronic Spark Timing... not estimated...!! :doh2::doh2::doh2::doh2::doh2::doh2:
SSpdDmon
October 19th, 2008, 06:04 AM
Email sent - IMO, I think it's just way too much timing down low.
WHYTRYZ06
October 20th, 2008, 04:12 AM
beer shoot me a pm and lemme know if u go to the track again.... ill give ya a hand... im in boston, ill take the trip up there to help u out...
Beer99C5
October 20th, 2008, 04:55 AM
beer shoot me a pm and lemme know if u go to the track again.... ill give ya a hand... im in boston, ill take the trip up there to help u out...

I would like to try this Wednesday nite, looks like rain though. I noticed the current tune I have 2-3 degrees KR at low RPM going up hills, so I think SDemon is on to something with my low RPM having too much timing, I will load the new tune and see how it goes. I will PM ya my cell.