FCA duty cycle questions.
Guys I'm trying to figure out why I'm only logging 62% of the FCA duty cycle when I have it at 71% on the table. I havent changed anything in the other fuel pressure tables besides the fuel pressure map so everything is like it was stock.
With it only going to 61% of its max duty cycle my pump is struggling to keep up with my nozzles. I've talked to the pump builder and he thinks that if I could reach the max the pump would be able to support the size of my nozzles.
Here is a couple of screen shots of my tune file and log.
http://i288.photobucket.com/albums/l...Adutycycle.png
http://i288.photobucket.com/albums/l...uneTestrun.png
Any help would be appreciated.
Thanks, Gordon
FCA duty cycle questions.
FCA duty cycle questions.
The pump doesn't look capable of producing it IMHO... We can see the ECM requesting the larger value and the pump just physically not meeting it. You can try to manipulate the sensor with the milliamps, however, it doesn't look as though the pump is wanting to put out! We have driven Dmax pumps past their limited mm3 per sec and gone out of range on the fuel flow base trying to achieve what you are, but only deemed to aggravate the problem worse. But hey, it doesn't hurt to test right? Lol
FCA duty cycle questions.
Drop 718@60% to 400 and step it from there