Yes, many GTO folks relocate the IAT sensor because of heat soak in the engine compartment, especially if they're at the drag strip. Usually, these guys are tuned appropriately to take avantage of this change.mscheaf wrote:OK here is what I will do.
1. I will remove the IAT relocate just to eliminate that as an issue. While doing that I will look closely at the maf to determine oem or not.
SOund like a plan?
A "false high" (relative to true ambient temp) IAT temperature reading will make the computer think the air is hotter than it is, i.e. less dense, and therefore inject less fuel to achieve a fixed target Air Fuel Ratio, regardless how the false high originates.
Consequently, a "false low" will do the opposite, and it will inject more fuel leading to it running rich relative to a targetted AFR.
Now, here's what I don't know, relative to the GTO:
Do the stock tuning tables "correct" the KNOWN/ANTRICIPATED high readings given the IAT sensor is in its stock position.... and, once it's moved, without updating/correcting the tuning tables, is the control doing what it THINKS is right, but missing the mark.
Now, did you install any kind of a resistor with the IAT move. I do know that some folks do THAT in order for it to read different, thinking that it will force the control to provide more power (false premise).
Not sure. The acid test, of course, is getting everything back to TRUE STOCK configuration, insuring that the stock tune performs OK, THEN installing the tune, and seeing if drivability problems persist.
Pain in the arsch, I know, but that would lead to some more targetted knowledge as to what's going on.
