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Old 04-23-2021, 09:31 PM   #1
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The quest for more power!!!

Hello everyone! I知 new to this form but have been living on the road in my fully off grid 77 passenger bluebird. As I知 sure you all know, busses are not meant to go fast. They have enough power to pull kids around at maybe 65. With our current configuration our bus weighs, with our trailer 38880lbs. This is asking a lot out of the little 180hp 5.9 Cummins. When I bought the bus I personally swapped out the 545 for an Alison 2000 series which made the world of a difference as far as highway driving goes but let me tell you, hills are painful. I致e been doing some reading on the edge comp and edge ez tuners. These specifically work with the data link, map sensor and an injection pump fuel delivery solenoid tap. I went ahead and purchased one specifically for a 98.5-2000 dodge Cummins and installed in. Sure enough, it didn稚 work. I have the 2001-2002 edge box coming in hopes that one will work but I知 sure. I have heard of people using these boxes but I知 not having any luck. While the bus was marked as a 2001, it was manufactured in 2000 so I知 at the strange year where it could be one or the other in the eyes of edge. Has anyone installed tuners on their 5.9 Cummins? If so which ones? Not looking to blow the bank as I can easily just change injectors but I like the idea of being able to adjust on the fly. As far as supporting mods, I have done head studs, hx40 turbo 4 down pipe, mishimoto intercooler and a fass lift pump so I知 fairly confident a tuner will
Not hurt anything. Please let me know if anyone can help or if someone knows where I can send my ecu out to get flashed. (Canada is okay!)

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Old 04-23-2021, 09:47 PM   #2
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Location: NM USA KD6WJG
Posts: 1,063
Year: 1991
Coachwork: Bluebird
Chassis: All American RE 40 FEET
Engine: Cummins 8.3
What is your EGT now on a hard pull?
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Old 04-23-2021, 11:11 PM   #3
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Year: 1999
Coachwork: BlueBird
Chassis: TC1000 HandyBus
Engine: 5.9L 24V-L6 Cummins ISB
Rated Cap: 26 foot
My bus is a 1999. I went looking into the motor at two points. (a) the diesel fuel filter housing has a slightly different drain valve than a 1999-2000 5.9L Cummings in a Ram, and (b) the head itself is a bit different, you don't have to remove the alternator bracket to get to the thermostat. Both these differences are seen in 2001+ (not sure for how long) 5.9L Cummings in a Ram.


So I would guess yours might be like mine, and the later year tuner will work. hopefully for you.


Good Luck!


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Old 04-23-2021, 11:19 PM   #4
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I may be wrong. But wouldn't an engine swap be more cost effective and reliable than an "over-tuned" 5.9?
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Old 04-23-2021, 11:49 PM   #5
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I could be wrong, but wouldn't a vehicle swap be more cost effective?
Do the math, and see how much power it takes to move 40,000 lbs up 100ft,
i think you'll find going from 180 to 230 hp isn't going to be worth the trouble.
You need 400+ hp. The new 7.3 Ford gas motor does 430hp stock.
Or tweak it a bit 790hp, or a supercharger and ...

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Old 04-24-2021, 09:29 AM   #6
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Long pull I can sustain 1000deg pre turbo
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Old 04-24-2021, 09:30 AM   #7
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Well, I’ve got the new one coming so we will see!!! Thanks for the reply.
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Old 04-24-2021, 09:31 AM   #8
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Quote:
Originally Posted by ABBus View Post
I may be wrong. But wouldn't an engine swap be more cost effective and reliable than an "over-tuned" 5.9?
While an engine swap would be alright, it’s a fe so pulling the engine could be a bit of a pita. As long as your smart about tuning them and watch your gauges on pulls the 5.9 even with a tune is very very reliable.
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Old 04-24-2021, 09:34 AM   #9
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Originally Posted by BeNimble View Post
I could be wrong, but wouldn't a vehicle swap be more cost effective?
Do the math, and see how much power it takes to move 40,000 lbs up 100ft,
i think you'll find going from 180 to 230 hp isn't going to be worth the trouble.
You need 400+ hp. The new 7.3 Ford gas motor does 430hp stock.
Or tweak it a bit 790hp, or a supercharger and ...

While this is true, those motors are not designed to be run at 100 percent duty cycle. Yes, they do make really impressive hp numbers but it’s the amount of torque that pulls you up the hill. With a simple 100hp increase one can expect almost double the torque in a 5.9 which should make a very noticeable difference in pulling hills.
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