Switch from Open to Closed Loop?
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Joined: Jan 2004
Posts: 2,111
From: Chesterfield Twp, MI
Switch from Open to Closed Loop?
My car has been tuned professionally, but I was interested in changing it from an open loop tune to closed loop just to see how it handles while receiving feedback from the o2s. Is it as simple as changing a few values in the Scalars/Constants or would it generally require changing the fueling maps too?
Thanks
Thanks
Last edited by meissen; Apr 25, 2012 at 08:43 AM.
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Joined: Dec 1999
Posts: 1,791
From: Upstate New York,USA
Re: Switch from Open to Closed Loop?
How do you currently keep it in 'Open loop'? By changed closed loop enablers? If so, I would just change those back to stock. If your NB O2's are still functioning then they should begin their reporting to the PCM and it will gradually 'learn' the correct fueling.
My car has been tuned professionally, but I was interested in changing it from an open loop tune to closed loop just to see how it handles while receiving feedback from the o2s. Is it as simple as changing a few values in the Scalars/Constants or would it generally require changing the fueling maps too?
Thanks
Thanks
Thread Starter
Registered User
Joined: Jan 2004
Posts: 2,111
From: Chesterfield Twp, MI
Re: Switch from Open to Closed Loop?
Well I see the two values for "Min Coolant Temp for Closed Loop" and "Min Coolant Temp for Closed Loop, Cool MAT" so I'm assuming its those two values but I'm going to have to download my current tune and compare to stock to know for sure.
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