01-26-2009, 12:16 PM
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#21 (permalink)
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A True Z Fanatic
Join Date: Nov 2008
Location: Miami
Posts: 6,403
Drives: '09 370Z
Rep Power: 1119
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Quote:
Originally Posted by danops
Regarding the 'knock'....
Has anyone looked into the C-VTC & VVEL variables on these motors? This could be the primary cause of the 'knock' symptom.
Does the 'knock' experience vary at a different throttle position/load?
Out of curiousity... I'd like to see more details like datalogging, dyno results that include throttle input & calculated engine load, air fuel, etc...
If these issues are apparent from just a stock motor & stock motor w/ test pipes, I would be very concerned about reliability with additional modifications including intake systems, headers, exhausts, and other parts without precise tuning.
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+1
Need more info.
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