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Old 03-15-2012, 01:29 AM   #132 (permalink)
Heihetech
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Quote:
Originally Posted by Ecky View Post
Forgive me for my ignorance, but was the o2 sensor issue ever addressed? It would seem that this could work perfectly on OBD-1 and older vehicles, and on OBD-2 vehicles as long as the knock sensor doesn't pick it up, but wouldn't the computer still flip out over the o2 in exhaust? Might still be worth it if your open loop maps were good, but it's very far from a good implementation.
As I have posted previously, ECU will still close the fuel loop, knowing nothing
from human cheating. It's smart human invention called DCD to GUIDE the ECU
to close fuel loop at the new points.

Open loop still runs the engine, but in a bad shape that wastes fuel, could
never save fuel. OBD-2 will not open the loop as long as the loop can be
normally closed.
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