Compression Ignition Addict
Join Date: Sep 2012
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Personally? No.. The turbo on the pickup engine is of marginal durability as well. I would imagine that if you check shaft speed of the turbo with the engine at full power at sea level, then again at altitude, you would most likely find the answers to the 6.7L altitude sickness.
If the turbo was not at the edge of its operating window in stock form, a tuner would not have hurt it. Ford/Dealerships simply use the tuner as an excuse to not pay for a marginal design. Along the same lines as blaming a CP4 pump failure on "bad fuel"
I have a very good friend that has a 12 model F250 that shelled out the turbo before it hit 5K miles, stock, not over/under worked... Just rolled thru a light and went back to the throttle and bang!. These reports are all to familiar..
While you can't necessarily compare different engine manufacturers, my 5.9L has been running a tuner for several years and is always running well beyond the factory IMAP specs... no failure yet