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help eliminating this knock

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Old May 28, 2011 | 03:15 PM
  #1  
stunt2's Avatar
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From: Georgia
Exclamation help eliminating this knock

so, experiencing nasty shift knock and need your advice guys. checked and nothing is hitting nowhere under the car. I think it's caused from timing jumps, but don't have that much experience to deal with it myself, therefore need your help

in the zip below, there are two logs - one with NLTS shift and second with fast shift without nlts. not a big difference though. and the rom itself

any help would be greatly appritiated. thanks in advance
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log.zip (13.0 KB, 0 views)
File Type: hex
12.hex (256.0 KB, 0 views)
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Old May 28, 2011 | 03:55 PM
  #2  
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From: Europe
im too new to mapping to see whats weird
(also the VIII xml is 10x bigger than my tiny IX one so dont know half the tables)

but I see you have 800rpm set in the NLTS settings and it seems wrong, from what I read here you are supposed to set it near your actual shift rpm drop
try setting it to 1500rpm or more should be better
it's not supposed to pop and bang or hit the limiter, at best I've got a smoother and softer shift than with regular lift-off

NLTS knocks on a otherwise knockless map so you shouldn't have it active while trying to fix your shift knock problem, it's not helping and it shows in you logs

good luck !
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Old May 28, 2011 | 11:12 PM
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From: Georgia
^^
good point to start with


any other inputs ?
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Old May 29, 2011 | 11:11 PM
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bump
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Old Jun 6, 2011 | 04:11 AM
  #5  
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140 views and no suggestions ? :|
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Old Jul 16, 2011 | 06:34 PM
  #6  
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From: Austin, Tx
Well that stinks...I checked your logs, and was thinking to myself "Nice, this guy is having the exact same issue as me it seems, I'll just read down to the bottom to see wha tthe fix....awww"

Subscribing in case someone or yourself recommends something to fix this.
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Old Jul 17, 2011 | 06:05 PM
  #7  
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From: Phoenix,Az
Im working on a map. You will need to do another log and make sure the the CALCULATED LOAD is checked when u log so i can see what loads your car is hitting.
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