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...Not because he can't do it, I think it was more the fact that he has had some bad luck with after market kits that people bring in and then he looks bad in the end,
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I agree, most any real full time mechanic has a real bad attitude when it comes to most "mods", myself included. It's generally ill-designed crap or a hair-brained idea that doesn't install like advertised, takes twice as long as estimated, never does as promised and there's usually a downside in the end so like you say, the shop takes the blame. With that in mind, I researched Banks and ATS to death before I decided to buy and install one. Our local turbo/injection pump shop was an authorized ATS installer and 7.3 authority so I talked a lot to him and many others who were actually in the diesel pickup engine trade. Most diesels of all sizes are turbocharged anyway, not for "hot rod" reasons but for max power output under load. I ended up being convinced to spring for an ATS kit and when I laid it all out on my garage floor my first thought was, Holy Crap, this thing is REALLY well engineered. So much so that I had heard at that time that Ford chose to use it in 93 or 94 which they did. What's nice about a turboed 7.3, pulling my horse tlr it doesn't take me 1/2 mile to pass somebody on a two lane road if I want to, and the increased pulling power going up grades at any altitude is great.
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and is it because of the wastegate at high altitudes???
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I'm sold on wastegated types regardess of the altitude. With a wastegate, the turbo can be designed to provide maximum boost at a much lower RPM, then the wastegate opens as needed to prevent over boost. Therefore you get max pulling power over a wider RPM range rather than just near max RPM with the nonwastegated style. They even went to wastegated turbos on heavy diesel trucks and you can really feel the much wider power range difference compared to the older non wastegated Cummins 335's, etc.
