Originally posted by WannaBe-SVT:

technically, running rich is good. i run a 5K during winter, and a 10 - 15 during summer, believe me, in summer, its great.


Technically you are completely wrong!!!

Running rich is bad on many accounts. Performance, Mileage, longevity of O2s & cats, etc...

Like the saying goes. "Lean is mean"


Also. The IAT mod does NOTHING in temps below 76 degrees.

The IAT mod basically only works at lowering the intake temp signal above 76 degrees. Also in the summer it can lower it enough that it will cause detonation and that pulls much more timing that this mod gains.

So you are talking about a mod that gives a small boost in timing (3-6 degrees) in the 76-100 degree temp range.

Not a bad idea in theory.

However if you consistantly do incur the wrath of the knock sensor the PCM will learn not to hit it. (I.E. tune out this mod!)
Also lowering this signal makes the point at which the PCM finally does pull timing well into the detonation range. Not good!

Actually in the typical driving operation range the ECT affects timing more than the IAT (hot air) does.
ECT temps over 200d = -20% timing
ECT at 210d = -30% timing
ECT at 220d = -40% timing

The primary fans don't kick on until 216d
The secondary fans come on at 224d
Yeah Ford -

For ref - The IAT has to read over ~150d before it pulls 40% timing. (and it sure better for the engine's sake )

2000 SVT #674 13.47 @ 102 - All Motor! It was not broke; Yet I fixed it anyway.