May-12-2015 05:06 PM
May-15-2015 06:51 AM
bshpilot wrote:you can believe what u want I guess.
if manufactures could (actually) achieve 25% better fuel economy via a tune or injector swap THEY WOULD !
I always chuckle to myself we i hear people in campgrounds claim theyre getting 18 or 20 TOWING their travel trailers. sheesh !
May-15-2015 06:50 AM
holstein13 wrote:emissions aren't an issue in ND. If u choose to abuse the power you can tear stuff up. If u mind your business and keep your foot out of it your fine. You aren't gonna do that with motorhome. But yes u can tear a truck up if your stupid lolchadk66 wrote:What about emissions and longevity? I'm assuming the changes to timing could have a negative effect on emissions and / or longevity. Otherwise, wouldn't every manufacturer do it?
Achieving better mileage comes from a combination of things. Altered injection timing is an important part of it. Also changing the amount of fuel at appropriate times to achieve maximum power output at the correct time. It's rather mind boggling actually
May-15-2015 06:20 AM
May-15-2015 06:10 AM
chadk66 wrote:What about emissions and longevity? I'm assuming the changes to timing could have a negative effect on emissions and / or longevity. Otherwise, wouldn't every manufacturer do it?
Achieving better mileage comes from a combination of things. Altered injection timing is an important part of it. Also changing the amount of fuel at appropriate times to achieve maximum power output at the correct time. It's rather mind boggling actually
May-15-2015 06:05 AM
mike brez wrote:the 7.3 was just never an animal you could improve economy on much for some reason. Not like the 6.0. Or the cummins which is the easiest to help out
My 7.3 has chip,injectors,turbo,4inch straight pipe exhaust,HPOP some trans work. I haven't checked my mpg in 10 years with this truck but I think I was getting about 15 mpg. I'm also spinning 35 inch tires.
May-15-2015 06:04 AM
May-15-2015 05:57 AM
May-15-2015 05:00 AM
May-15-2015 04:35 AM
May-14-2015 09:16 PM
WILDEBILL308 wrote:
Ok I will bite. Tell me about how you are going to get 25% better mileage chipping a diesel pusher.
Bill
May-14-2015 07:46 PM
chadk66 wrote:
the reason I want to talk mileage is because I'm pretty confident I can make the diesel produce 25% better mileage and far more power for a rather low price.
May-14-2015 06:37 PM
May-14-2015 10:19 AM
May-13-2015 04:51 PM
chadk66 wrote:
Am contemplating an early to mid 2000's Class A. Will be pulling an 18' enclosed trailer. Am leaning towards a diesel pusher. Dealer is trying to tell me a gasser will get as good a mileage and as good a power. I'm a diesel mechanic and I'm not buying it. What are some real world mileages and performances out there on both.
May-13-2015 04:31 PM
chadk66 wrote:JetAonly wrote:for all intents and purposes it's really flat where I'll be running. The trailer will only weight 5-7K I would suspect. just a light 18' cargo with a couple motocross bikes and a little gear and tools. Nothing real heavy. As a couple stated on here they can push close to 10 mpg with a cummins. And those I'd assume are stock. I should be able to make twelve with that same setup with injectors and a chip. I'm not concerned with the transmission they are built to withstand far more than I would be asking for it to do. We are making pickups put out 600 hp with stock trannies with no issues and pulling 40' toy haulers with them. I just like the idea of having everyone under one roof so they can move about and eat going down the road. I honestly don't care if I get better mileage than a gasser, it'll just be fun to try to see how good I can make it in that regard.
I logged 20k miles at 8.3 mph without a towed. Its about 7.6 with 5k miles of a 6k towed. I pull Eisenhower west bound tunnel at 28mph. It is 9% at 11000 ft at the approach to the tunnel. Total weight is about 39,000lbs. I normally run 68mph on the cruise…but I digress.
Unless you start running 50-110k miles a year fuel mileage is a red herring and you focusing on one of least important aspects of Class A ownership. Some B motor powered MH have 5k tow restriction. You will never see 12mph as a long term average. You don't say how much your trailer will weigh. The other concern is every hill you go up you, have to come down. You will need and exhaust or Jake brake, or a transmission retarder.