Closed loop at full throttle?!

PsyKotyk · Post by **PsyKotyk** » Mon Apr 07, 2008 5:14 pm

- S/N: 4900
- Calibration: Attached
- Data log: Attached
- Vehicle: 2003 RSX-s
- ECU: PRB-A06
- Mods: CAI/Hondata IMG
- KManager Version: 1.2.3.1

I seem to be leaning out a fair bit, and the logs are showing I'm in closed loop at full throttle/full MAP. (about 1:38)

It also showed me in in Open Loop/Cold status when the car was fully warmed. (about 1:32 - 1:33, also 7:10)

Also, not sure why I leaned out around 7:12 ... as it switched from closed to open. Short/Long trim seem okay.

Not sure why it flipped into open loop at 8:24.5

I assume it's normal/safe to be lean when you're decelerating?

Is the fuel status accurate in the datalogs?

PsyKotyk · Post by **PsyKotyk** » Mon Apr 07, 2008 5:44 pm

Okay .. I'm a yutz.. I have my lean/rich values inversed in my brain. :roll:

Still curious about the closed loop/open loop though.

Cheers

cranny · Post by **cranny** » Mon Apr 07, 2008 9:05 pm

only thing that comes to mind is what is your maximum map for closed loop set to.

Post by **Hondata** » Tue Apr 08, 2008 10:04 am

The ECU datalogs at different rates, and the fuel system status is not updated particularly often. If you look to see where short term fuel trim suddenly switches to 0% that will give you a better idea of when the ECU has switched to open loop.

At 7:12 you need for tip in fuel.

At 8:24 it shows open loop upon decel, even if the fuel injectors were not cut off. Adjusting the TPS to 0% should help.