Runs better in open loop: how to get that open loop feeling while in closed?
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Joined: Feb 2013
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From: Tijeras, NM
Car: 89 Black GTA
Engine: 'close to' stock 5.7 but trending>>
Transmission: 700
Axle/Gears: 3.27
Runs better in open loop: how to get that open loop feeling while in closed?
I've tweaked the mix quite a bit. Great mileage, nice power. But its better when in open loop. Why? Could it be that I've messed with the cruise settings and maps to the point where power suffers? If so, I'd like to "untweak" those things.
Otherwise, why is the car so peppy in the morning just after I start up and head out, but a little later down the highway its not as responsive?
Otherwise, why is the car so peppy in the morning just after I start up and head out, but a little later down the highway its not as responsive?
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From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Re: Runs better in open loop: how to get that open loop feeling while in closed?
In open loop the engine is run richer. When cold there is also spark advance added.
You can increase the O2 window tables for a richer closed loop. Since the engine is modded could possibly run additional spark advance.
RBob.
You can increase the O2 window tables for a richer closed loop. Since the engine is modded could possibly run additional spark advance.
RBob.
Thread Starter
Joined: Feb 2013
Posts: 153
Likes: 0
From: Tijeras, NM
Car: 89 Black GTA
Engine: 'close to' stock 5.7 but trending>>
Transmission: 700
Axle/Gears: 3.27
Re: Runs better in open loop: how to get that open loop feeling while in closed?
thank you Rbob: this https://www.thirdgen.org/forums/diy-...ng-points.html post has been very helpful.
Last edited by EvelBist; Jan 10, 2014 at 01:20 PM. Reason: update
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From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Re: Runs better in open loop: how to get that open loop feeling while in closed?
Yes, that thread has a lot of good discussion regarding the O2, INT, BLM's and such.
RBob.
RBob.
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