Increasing HorsePower -- What You Need To Know

[Rawze]

(10-24-2016 )ClarkWGriswold Wrote:  I was comparing a 10057 and a 10183 file and one of the parameters that differed was the fuel pump calibration. The 10057 had a P600 and the 10183 had a P821. Are these pump calibrations compatible or is that something else that needs to be looked at when considering changing calibrations?

Comparing more than 7,000+ settings between the two files against each other reveals the following...

* The transition from "city mode"/"highway mode" transition requirements are sightly different. The truck will have to be going down the highway for a few moments longer before switching from one mode to the other. This is pretty common to see in the calibrations as hp goes up.


* The higher HP cal (10183) has a 6% lower fueling limits that can be imposed on it vs inlet density (altitude and boost levels). Even so, it is still ABOVE what the engine actually requests for the 475 HP it is set to. -- Pretty much means that it will have no overall effect, except to maybe have a slightly cleaner fuel-air mixture at high altitudes.

* the 10183 has a higher max allowance to provide more fuel to the cylinders at the 1500-1600 rpm range only. All other max allowances are identical.

* Obviously the torque curves are slightly different,.. the 10183 has more HP, but it is mainly in the 1500+ RPM range. In lower RPM ranges, they are so very close to each other that I doubt anyone could tell any difference in power below 1500 RPM. someone driving the truck before,.. then after would not be able to tell anything different (they would only be fooling themselves if they thought otherwise) until they get it up into the 1500+ rpm range, where they would likely report that it pulls a tiny bit better up there. For example, at 1400 rpm, there is only 9 HP difference. At 1500 rpm, it jumps up by 25-HP more.


* some of the data-plate info and product internal options are listed as slightly different (like the fuel pump cal. info), but the data-plate info/settings have no effect whatsoever on how the engine operates at all.

-=- There is noting else in the file except for the settings that "say" it is a 475 hp program, etc. but these as well have no effect on how the engine operates whatsoever.