Okay, I have a 2008 F-150 5.4L with an AF1 3.0" intake, Magnaflow exhaust, custom tunes with XCal3 tuner, and etc.. I've heard the truck idles at around 525 RPMs stock in drive when it gets up to temp, but my truck doesn't feel like it's able to handle to low RPMs well enough.

Already talked to my tuner and he said to boost the RPMs up 50 via the XCal3, so now I'm running at 575 RPMs and the truck has smoothed out quite a bit stopped in drive idle, but I'm wondering if there are any issues with raising the RPMs a little higher? Aside from burning a little bit more gas, is there anything to be concerned with drive idling the truck higher?

 

No reason for concern. With PHP custom tunes and also when I had the Edge canned tunes, mine idles at 750. As I recall, the Edge manual says 700 to 1000 is desirable with the tunes.

 

Just want to make sure you guys know I'm referring to the drive idle, not the nuetral idle.. so it would be okay to drive idle near 700 rpms? All it does is burn a little more gas right?

 

Yes. When I am in drive, and stopped, with foot on the brake, it idles at 750.