I'm trying to to tune my old sleeve bearing turbo , it's on a 94 motor that's in my 91 chasis. I've had the car and link for a number of years with only moderate success getting it tuned. It currently has a lc1 wide band mounted just in front of the cat, exhaust gas temp probe on the manifold, and an electric fuel pressure gauge. I've tried installing and running RTlink and I can't seem to get a handle on it. When I try to tune with the link in its 2 auto tune modes I end up with fairly crazy numbers, mostly way too rich. Recently I've decided to try tuning it in what I call a manual way. What I would like to be able to do is turn off all lamba corrections and drive the car in the center of each zone across the rpm band while data logging. look at the wideband plot and make my own corrections. I'm not sure if I am turning all lamba off. I have the lamba screen on the keypad so that it does not display the L3 icon and it says lamba off. I also have gone to zone Z800 and increased it from 0 to 4. On my datalogs it does not indicate any L3 corections but it does display L4 values of 4 or 5. Question. Can I tune the car this way? If yes, am I doing it correctly?
Also sometimes I swear I can be out driving and I will see L3 corrections of 9 then 10 minutes later 1 for the same zone same exact conditions. I can also see on the keypad intake air temps while cruising of say 18 with a correction of +1 and then I will see a corection of 0 or +2 and check the intake temp and it has not changed. Thanks Michael
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