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minytrker
August 21st, 2006, 03:05 PM
After the CNC work on my heads my car is flowing a lot more so I started to re-tune it. Im losing 5 deg of timing at wot when before I wasnt. I am hitting alot of new cells now because of the more air but still, Im loosing timing at 5500rpm and .88g/cyl. What could be pulling timing, I found 2 deg from IAt but cant find the other 3.
minytrker
August 21st, 2006, 03:24 PM
I have checked all the most common causes.
ringram
August 21st, 2006, 09:05 PM
Aspark? Bkr?
minytrker
August 21st, 2006, 10:54 PM
0 kr
VYSSLS1
August 22nd, 2006, 12:24 AM
monitor - burst knock retard
minytrker
August 23rd, 2006, 05:09 PM
monitor - burst knock retard


Thanks alot... thats what it was. I played with it for a couple of hours and ended up zeroing it out. With BK baically turned off from 3600rpm on up I get 0.0 deg of KR and my wot timing is now what it should be. Can I leave it like this or is it hurting anything? I have 26 deg at wot at .96 grams/cyl. I never had an issue till I had the heads worked and started seeing more grams/cyl.
VYSSLS1
August 25th, 2006, 08:48 AM
Thanks alot... thats what it was. I played with it for a couple of hours and ended up zeroing it out. With BK baically turned off from 3600rpm on up I get 0.0 deg of KR and my wot timing is now what it should be. Can I leave it like this or is it hurting anything? I have 26 deg at wot at .96 grams/cyl. I never had an issue till I had the heads worked and started seeing more grams/cyl.


ah no worries as long as its all ok, yeah the first time i cam across this exact prob you had, it had me stumped for a little bit as well.
joecar
August 25th, 2006, 08:55 AM
VYSS,

Welcome to the forum mate (I should have picked up on this in the other thread).

:cheers:
Dirk Diggler
August 25th, 2006, 09:04 AM
B KR is preemptive if the PCM sees large changes of air (especially spikes in the VE table when in SD mode ) it will pull timing before it actually happened
VYSSLS1
August 27th, 2006, 02:31 AM
VYSS,

Welcome to the forum mate (I should have picked up on this in the other thread).

:cheers:


Joecar, im not new to the forum been here a little while now:wave:

anyway ill take this opertunity to say hi to all on here.

Cheers Brad.
joecar
August 27th, 2006, 06:40 AM
Brad,

Right you are. I saw 6 posts in 2 threads, so I assumed you just joined (I didn't pay attention to the date). :)
Time for another beer... :cheers: