AFR data log?
Thread Starter
Drifting
Joined: Apr 2015
Posts: 1,310
Likes: 93
From: Hager City WI
I was wondering if that was the case. Ok, thanks for the quick reply. I'm getting KR of 5-6 at WOT and trying to figure out why? The only mod I have installed is the Halltech CAI.
Le Mans Master
Joined: May 2000
Posts: 8,729
Likes: 1,508
From: Redmond WA
You should look for short term fuel trim, perhaps, which is the amount of fuel added or removed to keep the -narrow- band O2 (which it has many of) in range.
As a brief reminder for those that may not know, a narrow band can really only tell you if you're rich or lean, not how much. So it continually swings back and forth past stoich, but you can look at how much fuel it needs to do that.
Looks for PIDs labelled as SHRTFT
As a brief reminder for those that may not know, a narrow band can really only tell you if you're rich or lean, not how much. So it continually swings back and forth past stoich, but you can look at how much fuel it needs to do that.
Looks for PIDs labelled as SHRTFT
Thread Starter
Drifting
Joined: Apr 2015
Posts: 1,310
Likes: 93
From: Hager City WI
You should look for short term fuel trim, perhaps, which is the amount of fuel added or removed to keep the -narrow- band O2 (which it has many of) in range.
As a brief reminder for those that may not know, a narrow band can really only tell you if you're rich or lean, not how much. So it continually swings back and forth past stoich, but you can look at how much fuel it needs to do that.
Looks for PIDs labelled as SHRTFT
As a brief reminder for those that may not know, a narrow band can really only tell you if you're rich or lean, not how much. So it continually swings back and forth past stoich, but you can look at how much fuel it needs to do that.
Looks for PIDs labelled as SHRTFT
Thread Starter
Drifting
Joined: Apr 2015
Posts: 1,310
Likes: 93
From: Hager City WI
I just made another WOT data log. This time with a 32 oz can of Torco. KR was much better and timing was back where it should be. I'm still seeing a little KR but nowhere near as much. Fuel pressures look stable.
Thread Starter
Drifting
Joined: Apr 2015
Posts: 1,310
Likes: 93
From: Hager City WI
SCT X4 handheld. I am only data logging (watching). Not writing anything. Very glad I did. Shouldn't have any impact on warranty. I now know what she likes. I was getting a lot of KR and reduced timing. Much better now.
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