I have a PHP Gryphon programmer with custom tunes so my intake definitely does not run lean since I have it custom tuned. They say to run the canned 87 tow tune while waiting on my custom tunes. I've had my intake on for at least two years before even having a programmer and no harm was done.
2006 F-150 XLT 4x4 SuperCab 5.4L V8
Bully bull bar, window vents and tint
PHP Gryphon 87 custom
K&N CAI, Magnaflow 94136 high flow cats, 3" Borla XR-1, 4x18" stainless tips
Shooting new Borla videos soon!