PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

Question About Timing being pulled.

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Old 08-04-2011 | 01:15 PM
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Default Question About Timing being pulled.

My setup with hptuners is pulling timing like a crazy and knocking when it does, is this normal? otherwise, when the iats and ects are high the pcm pulls timing. But, Does this mean that the timing pulled will show up as knock or no? maybe im over looking this....
Forgive the newbish question
Old 08-04-2011 | 02:24 PM
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When the knock sensors pick up knock timing gets pulled.
Old 08-04-2011 | 02:26 PM
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right, but would the other way around i.e timing being pulled because of heat cause knock?
Old 08-04-2011 | 09:42 PM
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there is pre ignition and detonation.

aka knock, ping etc.

figure out what your problem is and then locate the tables that match how much timing is being pulled vs commanded.

gernerally high iat should have some timing pulled, same as ect.

as higher ect could cause pre ignition same as high iat.

here is a good read and is worth its weight in gold!.

http://www.streetrodstuff.com/Articl...tion/index.php




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