Thinking
Yeah, it's not like Ford has teams of engineers designing these systems for the best overall performance, drivability, and fuel economy or anything. 
I am surprised, though, AK, that the CAI had that large an impact on that many factors.

I am surprised, though, AK, that the CAI had that large an impact on that many factors.
That damn 3V didn't like any changes at all without a tune. Kept telling my friend to get a factory intake for his F150 (the one I put the motor in) because it would run fine until you gave it the beans, then it would lean out. He wound up selling the truck now... but it woulda been easier to buy a factory intake, I think.
They aren't like EEC-IV where it'll take about anything you throw at it and make it work.
They aren't like EEC-IV where it'll take about anything you throw at it and make it work.
It was about 55 degrees today, so I drove Frankie over there (it has no heater). First time hitting the freeway with Frankie, and it did very, very well. I am leaking a bit of oil out of the PCV hose, where it goes into the intake. Kind of wondering if removing the EGR valve is affecting it. I only removed it because it was leaking, and I had a block off plate already. I've always planned on putting it back on - but this is going to speed that plan up.
Too much air, also caused shift point changes thru the PCM. Like holding the shifts longer, or quick shifts if you let off the gas. Nothing wild, you could just feel it and sometimes held the shift points longer. Now it's reset, it's using my driving style to set the control points. So much better now. A tune would have cured these small problems and I could have stayed with the K&N.
Those numbers are misleading IMO anyway. Sure, it might make more power out of the box. But test that POS after a guy hasn't cleaned it for 3 or 4 years because he has a "lifetime filter" and see the results. Or lets see the results after someone doesn't oil it properly, and the MAF is caked with oil.











