Im located at 6000ft and regularly go higher.

I plan on doing the obvious, exhaust and intake and a tuner.

Does anyone know of a tunner that is specifically designed for this?

In my many searches, i read that power is made by adding fuel. adding air like turbos and hi-flow intercoolers (http://www.dieselplace.com/forum/autolink.php?id=49&script=showthread&forumid=7) are NOT needed until black smoke comes out. well just stock at WOT (http://www.dieselplace.com/forum/autolink.php?id=63&script=showthread&forumid=7) up here at 6000+ft theres is black smoke i dont get when im at sea level.( pretty much all the diesel have lots of black smoke here, although less on the duramax's.)

SO with a tuner adding fuel, all its going to do here is smoke more right? should i add air?


also secondary question, whats up with stacking tuners? im seen people sigs with multiple tuners.

I go to colorado two to three times a year. I've run the ppe 90 and 130 HP tunes up there. Smokes little more than down hear but not much.,its maneley during spool up then seems the same. If you can raise your boost a little without over speeding the turbo that will help too.

Maybe some of the EFI Live gods or vendors will chime in here. Building more boost should clean things up, and you can do it inexpensively with either a boost valve or a Banks BigHead wastegate, but I don't know if you run the risk of over spinning the turbo running more boost at elevation. Incidentally, I love running the DMAX over mountain passes -- it doesn't lose much power at all and you can really blow around the gassers that are sucking wind in the thin air.

I live in Denver and routinely work above 10,000 ft. I run the Predator and it works great at alititude. 120 for racin, 85 for daily driving and light towing (under 6000) and the 65 for towing more than 6K.

I have yet to see EGT temps climb above 1100.

What are your boost pressures?