Efi

[olddog]

Originally Posted by likenu2

Update: Bob had put the O2 sensor in the collector just outside the fender, FAST engineers said that it was too far away and was sending false readings to the computer and the throttle body. His plan today is to move the O2 sensor to a single tube of the header closer to the engine itself.
Joe

The old O2 sensor is too far away from the engine excuse, is just that, old. Back in the days when no one had access to tune a factory OEM ECU it was true that it would cause problems. That can be corrected in the tune of a Ford ECU today, especially now that the O2 are heated. I am very skeptical that this is going to fix anything.

Also I am very skeptical that these so called self tuning systems ever come close to the same performance level as tuning it right.