Toyota Lexus Forum - Performance Parts Tuning » Toyota Discussion » Toyota Technical » running lean 7mgte 550/lexus upgrade?

running lean 7mgte 550/lexus upgrade?

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Old 26 Jun 2010, 12:02 am   #1 (permalink)
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Default running lean 7mgte 550/lexus upgrade?
I feel like i am hitting a week f/c and my a/f gauge say i am running lean when i idle/ rev it up...i run rich under load untill i get into mid rpm...
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Old 26 Jun 2010, 12:03 am   #2 (permalink)
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Do you actually have a wideband a/f gauge? Somehow, I doubt it.































Otherwise, if all you did was upgrade your injectors, and your intake, then you made the awesome mistake of completely ignoring the fact that you need to retune your car. The ecu doesn't know what to do with all the changes you just made to it's fuel and air mixture, and it's no surprise at all that it's not running right.
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