FAQ EDC Pumps / W202/W210 W463 ECU’s
FAQ EDC Pumps / W202/W210 W463 ECU’s
The only thing that pump has diff from a M with RSF governor is the simplicity in the actuator mechanism , wich is replaced by a computer, nevertheless it has its own limits , beeing one the software that runs n it , which seems hard to mod as first try!
back to the harware part , 605 and 606 pumps use diff element serial number, 605 ends in 553 and 606 in 554 and indeed they are diff , the main diference is the helix which determines the max fuel output, at first sight one key diff is the 553 has a cut off port in the helix and the 554 does not, so basically in numbers the 553 is able of putting out 110 to 115cc irespective of rack position due to the cut off port. the 554 does not have the cut off port so the max injection is 140/150cc if someone can achieve that rack travel (16mm of positive injection) and still have idle.
Basically my idea and the others that deal with hardware tunning , besides the wider elements , is to maximise the rack lenght available. and this will determine completely diff outputs. Usually we start to change idle position,(allow maximization of positive output) but changing this also changes the computer ability to control the rack within known premisses. This procedure renders imposible the use of the stock computer(soft). Then to use this technique is always a max rack travel(17mm in this pump) wich can be achieved with 4.5 volt or not , for those who think it can i suggest to measure it in a bench tester with the pump at operational temp of 80ºC
Basically this is why , some fellas move to the mech RSF, which is not so dificult to tune idle at 5mm and max rack travel of 22mm leaving 17mm of positive rack displacement , wich with a 8 mil element can give 250cc at very high pump RPM , i never done any of this pumps cause they are very expensive and there are many experts around who can build them cheaper than i can.
Nevertheles i have made trials and i know how to squeze 250cc+- 5cc out of a M with RSF and 8 mil elements at 3k.
The idea is to do the same with a EDC , well my intention is this
, i belive it might well be the idea of some members, but thinking that volts = output is not the right foot forward.which u all happy new year,
Regards
FD,
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hehe , people got to understand the hardware first...
The only thing that pump has diff from a M with RSF governor is the simplicity in the actuator mechanism , wich is replaced by a computer, nevertheless it has its own limits , beeing one the software that runs n it , which seems hard to mod as first try!
back to the harware part , 605 and 606 pumps use diff element serial number, 605 ends in 553 and 606 in 554 and indeed they are diff , the main diference is the helix which determines the max fuel output, at first sight one key diff is the 553 has a cut off port in the helix and the 554 does not, so basically in numbers the 553 is able of putting out 110 to 115cc irespective of rack position due to the cut off port. the 554 does not have the cut off port so the max injection is 140/150cc if someone can achieve that rack travel (16mm of positive injection) and still have idle.
Basically my idea and the others that deal with hardware tunning , besides the wider elements , is to maximise the rack lenght available. and this will determine completely diff outputs. Usually we start to change idle position,(allow maximization of positive output) but changing this also changes the computer ability to control the rack within known premisses. This procedure renders imposible the use of the stock computer(soft). Then to use this technique is always a max rack travel(17mm in this pump) wich can be achieved with 4.5 volt or not , for those who think it can i suggest to measure it in a bench tester with the pump at operational temp of 80ºC
Basically this is why , some fellas move to the mech RSF, which is not so dificult to tune idle at 5mm and max rack travel of 22mm leaving 17mm of positive rack displacement , wich with a 8 mil element can give 250cc at very high pump RPM , i never done any of this pumps cause they are very expensive and there are many experts around who can build them cheaper than i can.
Nevertheles i have made trials and i know how to squeze 250cc+- 5cc out of a M with RSF and 8 mil elements at 3k.
The idea is to do the same with a EDC , well my intention is this , i belive it might well be the idea of some members, but thinking that volts = output is not the right foot forward.
which u all happy new year,
Regards
FD,
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