Originally Posted by
Spray-Cam Hell-Ram
Well, a couple, of things before I get into your pull there, which appeared to be more like of a full mash of the pedal, and then coming off of it entirely for a second or two, and then briefly flooring it a second time before letting off of it again, which I will come back to here in a second. But before we can make a true assessment of where your build's fuel needs fall within your current fuel set-up's fuel flow capabilities, there are a couple things that need addressed before asking if you wouldn't mind another pull, but this time running a different VCM scanner channel, table and graph set-up. Whether that be the set-up that I'm going to post along with this message, or another from someone else if they choose to post a different set-up that you like may like better. Also, when you do the next pull while logging the new channel set-up, try logging a pull that is either from a stand still up to 80-90 mph if you can, or one similar to your first pull here where you are already moving, but try and start somewhere around 15-25mph and pull straight through without letting off until you hit 80-85 mph or higher if possible. Letting off of the pedal kind of throws a wrench in the data a bit. I can't speak for others but personally, but I want to see what the fueling is doing under WOT and particularly see it in WOT just before shifts while under full load. That being said, I do understand why you are asking this question, being that, despite the break in your pull here, your injector duty cycle seems to be just falling short of 80%. But let's see how high your duty cycle goes staying under WOT/full load through a couple of shifts. Another suggestion I want to make that may help knock down your injector duty cycle a bit is installing a 180-degree thermostat (Maybe even a 160-degree). And aside from the fact that it seems to be "Hot as balls" already wherever you are located, I personally have found that my hemi stroker build runs better overall around 180 degree as opposed to 203 degrees, but also has slightly less of a fuel demand running at 180 degrees. And if you haven't already and have some type of controller set up, maybe adjust to have your cooling fan or fans cut on around 175-180 degrees. I think making these two changes may help lessen your fuel demand being that fuel demand generally increases as your engine, oil, and coolant temperatures increase. I could go on further from what I saw in your log but I am going to stop there because I feel that a second pull with a different scanner set-up and these adjustments made will yield a bit of a different result. One final note... be sure to reset fuel composition and reset all adaptives in your scanner after loading the new scanner set-up and before making a second log. Others may chime in and add on here or even offer a different assessment, and I would suggest taking in anything else offered as well as there are quite a few knowledgeable members on here that can offer valuable insight. I'll attach my scanner channel, table, graph set-up for you to save and upload if you so choose. Hope this helps out a bit. Good luck!