Dangers of Running Rich, 3sgte owners Options

[jgreening]

Well, ten days into ownership of the 3sgte and I can safely confirm what everyone else has said over and over....these engines run very rich. I have read many posts about this and about the fact that Toyota made it this way to avoid lean conditions. However, I would imagine that running an overly rich condition cannot be good for the engine over time either. I am wondering whether for engine longevity and reliability purposes, us 3sgte owners should take action either through an S-AFC or stand alone to lean out the A/F ratio. Obviously, we can see some horsepower gains from doing so but I am particularly interested in responses dealing with engine life.

[Supersprynt]

ECU's dont dump more fuel they retard timing. And the 93 octane here is like 97 in Japan. On top of that, Japan uses RON (highest) gas ratings. Europe uses MON (lowest), we use PON (the avg of the 2). So in actuality, its the same gas, just different numbers. Quality controls differ however, depending on the country.

This post has been edited by Supersprynt: Sep 29, 2004 - 12:27 PM