Any potential problems running full time OL?
Thread Starter
Teching In
Joined: Oct 2005
Posts: 33
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Any potential problems running full time OL? My O2's went south, and I tuned the car using my wideband, (VE, MAF, PE, Timing, etc.) It runs great in open loop. Will there be any problem down the road in running the car like this?
I am using HPT and here are the changes I made.
Closed Loop Enable table set to 284 across the board.
LTFT disabled.
Anything else I should do, or should I just go buy some new O2's?
Jeremy
I am using HPT and here are the changes I made.
Closed Loop Enable table set to 284 across the board.
LTFT disabled.
Anything else I should do, or should I just go buy some new O2's?
Jeremy
If you have the WBO2 hooked up and keep an eye on the guage, I see no reason why you can't run OL full time. As long as the MAF and VE are dialed in fairly well, PE is set appropriately, and the OLFA table is set ok, you should be fine. You'll just have to keep an eye on your AFR manually instead of relying on the LTFT's, which are disabled now. I would also program the WBO2 to report back over a longer period if you can. I believe with my LC1, I can tell it to slow down to 1/2 second readings (or slower maybe). It then averages the readings over the 1/2 second before reporting them back. That way, it won't look like it's jumping around too much.
weather affects fueling a little bit form day to day in SD mode, but if you run the maf, that helps. I would log from time to time, just to amke sure things are where they need to be. Or like the others suggested, get an AFR gauge.
