Meaning for example, if you smack it right off idle, it waits to really put the fuel to it until it builds some boost, instead of fueling and letting the turbo catch up. If this is the case, why? I can't imagine egt's soaring high enough to damage anything for the few seconds the turbo takes to spool up. That being the case, the lag you get with the 600's seems like performance thrown away to me.

 

emissions my friend not egt's.

 

Oh. That makes perfect sense-the resulting smoke cloud is an emissions nightmare.

 

The 600's fueling is boost sensitive, thats part of the reason we three dimensionally modify the fuel pressure, MAP, MAT, and the wastegate in our Eliminator Series performance modules for the 04.5 and up.

 

I bet if you electrically "clamped" the map sensor line so that it couldn't indicate below a certain boost, you could get more fuel faster. However, I'd also be willing to bet that the new ecm's are sophisticated enough to wonder why there was boost at idle, and would set a code. Am I right?

 

I think that's how most boost fueling gizmos work. You unscrew the boost pressure sensor and screw in a switch with resistors in it. One side of the switch is for idle (0 psi) and the other is set for anything else and has a corresponding resistance that says it is at full boost all the time. You may only really have 20psi boost, but the computer is dumping in all the fuel it can cause it thinks its at full boost. Makes lots of smoke too

I don't think it has the rationality in the processor (yet) to throw a fault. Maybe not though.

 

v8440 and bigblock2stroke,

Your theories are sound, but the Cummins ECU is smarter then you think. If the ECU sees anything out of what it thinks is "normal" it will throw codes like mad. We waited on releasing our Eliminator Series until now because how code happy the ECU is.

 

Well if I was one of those, uhmm, tree hugger types and everytime I saw a "new" diesel leave a stop light in a cloud of smoke I might think it was a nightmare .

The D-max and PS engines are the same way with the later year models.

SPDiesel, when are we going to get the specifics on how your product compares with the competion? how much timing, how much fuel pressure? I do like the price no doubt!

 

Yeah, I was kinda afraid the ecu would know to look out for stuff too far out of the ordinary.