(09-14-2012, 05:48 PM)Richard Wrote: On some of the bus conversion forums, they make reference to the DDEC responding differently when the cruise is on. It is actually possible, and common, that the engine is programmed to have more HP and torque when on cruise to encourage the truckers to run on cruise (aka to drive the speed limit)
I swear my engine pulls hills on the cruise without shifting, that it will not pull without shifting when I am the cruise control.
Richard, I took note of that today going west on I80. Now doubt with cruise off and mode button on, performance feels stronger..
Do you mean cruise set has more power? On our model coach the mode on mean less shifting.
1996 #422 and 2004 #689 with YELLOW Goldwing, BMW K1200S, RZR, Dodge Truck
I like 59 MPH it gives me about 10 MPG up a hill, own a hill, towing or not towing about 10 MPG.
Steve & Patti, Bonnie and Tucker
1982 Newell 38' Classic, DD 6V92
cocktails for as many will fit in the site, dinner for as many can sit at the pick-nick table and sleeps 2 since I fixed the couch
Yes, cruise on seems to have more power to me. This is independent of the mode button on the Allison tranny. Maybe, it's my imagination. It's not my imagination that it the DDEC can be programmed that way. I have never had my DDEC "read" so I don't know if mine is that way or not.
Richard and Rhonda Entrekin
99 Newell, 512
Maverick Hybrid Toad
Inverness, FL (when we're home )
What tranny "mode" ? Some have "Econ" and others "Perf". The "Perf" is for hilly terrain... I prefer free wheeling for better mileage
Larry, Hedy & Benny Brachfeld
2003 Coach # 646
2 Slide, DD
MINI Cooper Clubman S
MINI Clubman , John Cooper Works Rally Edition # 3 of 70
Monster 1000 Watt, Electric Skateboard
Yamaha Golf Cart painted Kawasaki Green
A Coach driveway with a shade structure and swimming pool
A Pueblo Home on the Border
Some people pretty high up in the engine OEM food chain have confirmed the 'more-power-in-cruise' set-up. The logic being that the computer can better control the engine.
Watching the space shuttle on approach is a classic example of our caveman reaction times. When the computer 'flies' the shuttle approach, the landing is always near perfect, not so when humans are at the controls.
Tom did you compare the prodriver mileage with your vmspc?
Heading west from Steve Bs the prodriver showed about 6.5 but I hadn't reset it. We had headwinds all the way with the hills.
The vmspc showed higher but don't remember. This was driving about 60-62
Heading up I25 from Colorado Springs the vmspc showed 8+. This was steady with no headwinds. I need to reset the prodriver when I get back.
)
