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Message: [QUOTE="Hotrodtractor, post: 104608, member: 25"] I feel like picking on you - mostly because you can take it. What is a "large single"? What is towing "heavy"? Where does "high" and "low" elevation come into play? At my "lowly" elevation of say 1200 feet (pretty damn low comparatively) I have towed with S400 based chargers on manual trans trucks that exceed the legal limits on a regular basis with 7.3s. Inducers on those S400 chargers ranged from 65mm to 76mm. I'm picking on you a bit because some of what goes into sizing a turbo setup so its not so laggy and smokey is beyond just the turbo - you also have to look at how its implemented and used. For instance - you say a turbo is smokey and laggy at your elevation - a bump in a couple of hundred RPMs from a gear change or a transmission tuning change might make it snappy and responsive. This is super easy to do on a manual trans truck - but slightly more complicated on an auto truck - on the manual truck its just changing how its driven and shifted. Another example - I run 33" tires on my Dmax using 3.73 gears - its pretty responsive across the throttle for the most part - except when its in overdrive - that transmission actually has two overdrives - so I'm changing to 35" tires - I also plan on regearing to say 4.10s or 4.30s to better take advantage of 6th gear and making it SUPER responsive everywhere. Just some food for thought from a redneck in Ohio. :D [/QUOTE]

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