Whaaat Bank's Crankin' out 700 H.P !

[Archive]

Marco. . I am not that famialar with the HPCR on the cummins, but have spent more than sometime with some of the other systems. . the pump on the Cummins looks to be very small... I guess the failure depend on the quality of the pump...

The system I have worked with do not monitor the needle. . I am guessing they monitor this to make sure the injector is doing what it is told to do...

MAF?? Manifold Air F????

What is the difference in the Gen 1 and 2??



We were working on another brand. . but have seen 30-40%increase in HP as injector nozzle sizes change... Had an engineer come down one day. . and he added 40-50%hp in just a few seconds with a program changed... never did get to combined the two at the same time...

We'll see when more engines get out... .



I guess my main point was. . who would take out a fuel system. . and not modify anything. especially when some little changes can make big power. . More than just then head and intake...

Keep up the work marco... I still waiting on one of those MAD ECM's. .

Bryan

 

[Un-Hemi]

MAF: Mass Air Flow?

 

[Diesel Freak]

Originally posted by nascar mark

At Diesel Thunder in Spokane a guy from the Dodge dealership brought a 03 dodge with new cummins. We all chiped in and paid for a dyno run. The stock 305hp/555ftlb's engine turned 262hp/483. 2ftlbs at rear wheels.

I wonder what it would crank out once it was fully broken in?

 

[Marco]

Yes

MAF = Mass Air Flow.



They combine the readings of the MAF, MAP, IAT ( Sometimes)

to figure how much air is going through the engine.



If you fool only the MAP... it'll work but only up to a certain point.



All Bosch systems use a MAF, and seems almost everyone else is going to also.



No matter how good the high pressure pumps are, if you raise the rail pressure by fooling the system, in the long run you're asking for trouble.



When Bosch came out with the Common Rail system they stated,

"Pressures up to 1600 bar". Well, that wasn't true!

The max pressure for which those systems were designed was/is

1350 Bar.



The new second gen Common Rail systems are now working with 1600 Bar, but only few of them are on the market yet.



Marco

 

[Archive]

Duhh. . Mass Air Flow... MAF never crossed the brain the other night...



The HPCR system we are using does not use a MAF, or MAP. . but it does look at the IAT... But for our use it follows a fuel map and to me it does not have the acceleration some other do. . but that all can be programed (I think they are just trying to keep the smoke down. )(Dang Tier emmisions. . but are bringing some technology to these engines. . New engine come out just to meet the Tiers) I think in time they will have the MAF sensors. . not sure why they are not using the MAP. (used to) Sure would help in diagnostics, being able to see those pressures. .

Pump pressures run up 20,000 continious. . and about 22,000 at peak... The relief is set just above the 1600 bar...

Bryan



(Hows the MAD project coming along. )