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Old 02-02-2009, 09:02 AM   #15
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2003 25' Classic
Zanadude Nebula , WNY
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Haven't done/needed to do any research on the new air suspension system's. Just how do they improve, better control suspension for towing? I've read here that some feel they actually do more harm than good.
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Old 02-02-2009, 09:31 AM   #16
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1989 25' Excella
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Front hitch for bikes...

365 hp
650 lb/ft
15mpg towing
24-25 mpg unladed

What mods could possibly help?

Bill
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Old 02-02-2009, 09:52 AM   #17
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My brother runs air suspension on his Toyota Tundra pulling a 26' "box" with slide-outs. I haven't made a final choice on a TV, let suspension tweaks. He likes the air bags, in part because the stock suspension is a little soft, in part because he does a lot of boondocking off the hard road. He thinks the bags give him a way to "tune" the suspension for his daily driver. As always, your mileage may vary.
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Old 02-02-2009, 10:37 AM   #18
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1969 25' Tradewind
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Bigger open exhaust to reduce EGTs and avoid melting the turbo down, boost and exhaust temp gauges, aftermarket class IV hitch, Cipa extendable towing mirrors, rear view camera to aid in hitching up, and changed all fluids to synthetics including the differential. Naturally there's always plans in the works for a few more gadgets here and there.
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Old 02-07-2009, 05:24 AM   #19
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Colleyville , Texas
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Advertisers make grand promises of additional power with "Bolt On" engine mods; however, I would be wary of such claims. My experience with sports cars indicates otherwise. To prove this to myself I put my Corvette on a dyno before and after various "Bolt On" mods and found only a slight 7hp gain after various mods i.e. air cleaners, headers, cross pipes and mufflers. You may find that a change in base power plant and gear ratio work best and that may be easier accomplished by the obvious. I'm certain that other 'gearheads' can chime in here with more detailed advice for you. Good luck.
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Old 02-09-2009, 07:49 AM   #20
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I've fooled around with cars for a long time. Experience is that sometimes an increase is seen, but there is no free lunch accompanying it. As above, most mods take a tremendous amount of miles to pay off.

Overall, stiffer rear gears do the most. The tradeoff is a lower cruising speed for the same economy.

My truck is geared with a 3.73 limited slip. Great balance of power, great rpm range in each gear (manual transmission truck; and that is a narrow range compared to a gas motor), great performance (power AND economy) when towing or solo . . . but only if I keep the solo cruising at about 66 mph, the top end of the rpm "sweet spot".

My "economy" (fuel mileage solo, only) would improve if I went to numerically lower rear gears. But I would lose the great blend I have now.

The reason I chose a 2003-4 Cummins powered truck is that the balance was about as perfect as it could get. Not many tow vehicles see 19 mpg around town.
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