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General Engine Management / Tuning Forum Discuss general EMS tuning concepts that do not pertain to a specfic brand or product.

Close loop vs Open Loop condition

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Old Oct 2, 2006 | 02:05 AM
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From: SG
Close loop vs Open Loop condition ?

Questions for ECU Tuning, is it true that for our car, non-boost/vacuum = closed loop and boost = open loop ?

Some says it's 30% throttle ... not sure which is true
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Old Oct 2, 2006 | 08:34 AM
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From: Logan, WV
It's based on throttle position and uses a few different values based on RPM. 30% is about right for the lower RPM range.
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