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Message: [QUOTE="Big Bore, post: 133943, member: 760"] Actually the slow spool is what's going to hurt you because you will be dumping fuel at lower rpms trying to keep/get your speed up and you will be under the turbo which is going to make a lot of heat, so you will be forced to back down/downshift like you do now. Dzchey knows a LOT about 7.3 Powerstrokes. In fact I have talked to him extensively about what I'm doing. You might want to PM him, he's a pretty good guy and I think one of the site owners. There is also a guy near you somewhere running a set of compounds on an OBS running a stock non wastegated turbo for the primary and I dont recall what he's running for atmo. Not that I think non wastegated is ideal at all, but just an example. I'm really becoming convinced that for a kickass tow rig, using a turbo like the GT4202 with large exh housing for an atmo, and externally wastegating the stock turbo is going to give a guy more [I]useable[/I] horsepower while towing heavy at altitude. [/QUOTE]

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