PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

lean or rich

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Old Nov 20, 2005 | 06:48 PM
  #1  
zrater's Avatar
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Default lean or rich

can ping on top end 5000 rpm or so be caused by lean or rich condition
normaly rich from factory stock tune, was at 12.5 on dyno all
the way across the board. i changed timing doesnt seem to matter
every time it gets to 4200 or above, i get about three kr. can not
put this issue to sleep for some reason, pe to much or is it timing issue
im getting really sick of this issue.
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Old Nov 20, 2005 | 07:32 PM
  #2  
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May be real or may be false KR. If you take out 4
degrees and still have 3 of KR, probably false. You
can pick up false KR from things like valvetrain noise
and other mechanical goings-on.

You may want to play with the knock sensor filter
settings, desensitize them. Also may want to just
decrease attack rate and increase decay rate so it
is less jumpy and goes away sooner.
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Old Nov 20, 2005 | 08:41 PM
  #3  
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thanks jimmy , cant get rid of it. move timing up and back and still there
sounds like valve train noise to me but i dont know. went thru alot of petro
doing this on back road , pissis me off . witch way do u go to de sense
the k sensors up or down with value. i just move the other two as
you said but havent upload it yet. winter is here and im running short
on time to do this. if i blast this thing with 104 octane boost would that tell mee any thing, thanks alot jimmy you kick *** man............... also
when driving around block for a little while than make a pull its worse
like intake getting over that 80 degree mark.. i dont get it .
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Old Nov 20, 2005 | 09:21 PM
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How have you set your fans?
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Old Nov 21, 2005 | 01:24 PM
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yes jimmy , 195 and lowered fans at on at 208 off at200 low speed fan.

Last edited by zrater; Nov 21, 2005 at 04:39 PM.
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