question for 550, DDS and the acert experts

2stick, i like to stay under the radar, have always hauled heavy but no permits. walk softly, carry a big stick. leased to " home of the big iron " in Germantown Wi i know you know us. my truck dosent fit in but have more HP than all but maybe 3-4. the rest is confidential. ..HA..HA

 

PaulE, I know them, back in the early 90's i use to haul 5-6 pallets of wine, couple times a month back from cali. for them.

 

been running the fs1212 instead of the 256-8753 have noticed a rise in mileage,still testing though,been heavy and pulling alot of mountains so will ty to track a little better,think u might have something PaulE

 

Not necessarily true. I run a long hood W9L (w/ a MBN 525hp C15) and pull a 53' spread cattle pot 99.99% of the time. On the rare occasion I do pull the dry van, my mileage is ALWAYS worse. ALWAYS. I run mostly local now, but I virtually never shut the truck off when loading/unloading the bullrack. I can typically load faster than the cool off time for the turbo and engine (and usually more loads in the day than the van, so less wear on the starter). The van, depends. Usually takes a lot longer, so I shut it off.

From all of the guys I've ever talked to and talked about mileage, the 379 is nearly always worse than my W9, by about .5-1.5mpg. I get 5.5-6 runnig long haul, and have to stay close to 70 to get it. Run much below 65, and I usually loose 1mpg. Just have to keep the engine in its "sweet spot".

From what I've heard, the guys running the Pitts box tends to do .5mpg better than a truck not equipped with one.

 

Bigswede, hows throttle response? you probably dont step on it quite as much as before. ive heard some crazy claims on mpg increases.you might see some .all depends on that Bigswede foot. please post when you have more.

 

I got my computer today with the 625hp 2300 program, wow what a difference.. Well worth the money!

 

what engine do you have?

 

2005 mxs c15

 

who did it for ya you send them your ecm?

 

I have a local shop that does some work for me I really don't want to put them out, if you know what I mean, I don't know how a mail program would work, because you have to calibrate the timming, on the engine with the ecm. Would be a problem with the warranty if you took it to a regular cat shop to have it calibrated. I only had $1200 with everything, and that was keeping my other ecm..