wastegate Posted February 13 Report Share Posted February 13 Have a weird little issue that has been tickling my annoyance. When cruising on the street, normal 50-60kph light throttle, sometimes I would feel the engine drop off in torque or labour just a tiny bit. I'd look at the Lambda and it would be pretty lean at 1.15 etc. Then restores back to around 1.0 and feels normal. I've tried to work out what is causing it for a while now and from what I can see in my tune and ecu logs, really nothing is a smoking gun. It just seems to go rich, then Lambda Fuel Correction kicks in, leans it out a bit back to 1.0 then about a couple secs later, bam, leans out where CL Lambda takes out all the fuel it put in. All this while same throttle input, speed and engine speeds. Eg just cruising down a 60kph road. Engine is a 2JZGTE, 272 Cams, Turbo etc with a A340e Auto. I'm kinda starting to lean on a failing auto maybe putting load on the engine while cruising? I can't find anything in the log to say the ECU is doing it. Just weird it goes mega rich. Here is a link to the tune file.https://drive.google.com/file/d/13siHUU6E5GH92eacB36jkLJ6z8c5IkyZ/view?usp=share_link Here is a link to the ECU log (example of what I'm looking at is at 1:10)https://drive.google.com/file/d/1TOzDgf1oI7hnyDx7mhaMa7fmD05d8uqt/view?usp=share_link Any advice is appreciated. Quote Link to comment Share on other sites More sharing options...
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