ddestruel

this one has me scratching my head. my truck has always puffed a little at higher altitudes especially 6k-8k ft + and towing.

truck is 03 triple nickle
smarty 4.11 mild TQ management aftermarket turbo program 4.11BD 2.11B sounds like it but i could be wrong
HTT62/12
CFM+ intake
AFE stage 2 intake.

4" pipe

in-tank fuel pump


So what has me stumped is at sea level my truck if i roll into it at low rpms will smoke like a banshee til she lights. yet at 7k ft+ with a trailer i roll into the trottle or lug it down and she barely puffs a light haze not much different then stock with no programmer. this is the opposite of what it used to do with the same program. last year. i havent changed anything. the truck used to at sea level put out a light puff at low rpms with a load (sometimes heavier if i rolled into it ) and then clean up rather quickly minimal smoke but at higher altitudes (less O2) it would puff and haze a little when i got in to it. overlall boost at higher altitude is still 35 psi WOT and at sea level 38 WOT so nothing there has changed just the low boost fueling raised an eyebrow since it is counter to what any of my previous diesels or this one for that matter have consistently done to me when towing at high altitudes

am i missing something do i have a sensor bitting the dust mildly



FYI i tend to like keeping this rig on the cleaner side of smokey since my wife got it a smoke award and co-inciding inspection from the state of california while teaching her how to operate a stick prior to our recent union.