installed afr gauge and showing lean
#1
installed afr gauge and showing lean
Just installed a aem afr gauge and when started cold it starts out in the low 11's and slowly rises and ends jumping between the low 15's to low 16's by the time it warms up. It's a bolt on lt1 with a mail order tune. What should I do?
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you need to tune it, it should be targeting around 14.3-15.3 ish in closed loop at any speed and most part throttle driving. its always richer on start up to help lubricate the cylinder with extra fuel and help warm the engine up faster.
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An engine has to run richer when cold because cold engines cant atomize the fuel efficiently fast enough, therefore more is needed on a cold engine.
Also more fuel than needed washing down the cylinder walls is a BAD thing