Tuning hellcat injectors

[Pretty_pennie345]

Im planning on installing a e85 flexfuel kit on my 2017 5.7 charger and ive seen a few issues with WOT and the injectors one recommendation was to swap for hellcat injectors which i have. Im curious as to whether or not just transfering the stock hellcat tables will be good enough or how i would go about scaling them in.

[edcmat-l1]

Vague posts get vague answers. Yes, maybe, depends.....

If you swap injectors obviously you have to correctly input the data that goes with them. "Scaling" by definition shouldn't have to be done. Whether or not the data fits your specific tables is a different question. Without seeing your tune file or even knowing what year your car is, all anyone can do is guess.

[Pretty_pennie345]

I guess whaf im asking is if i install the hellcat injectors on my 2017 dodge charger rt with the stock hellcat tables will it be good enough to run without flooding. The file is uploaded as well.

[Spray-Cam Hell-Ram]

You should be ok to use the pulse width vs fuel mass table and inverse table values from a hellcat tune but your injector pulse width offset table will need some scaling done since your table uses differential pressure instead of injector pressure. Your start up table will require some big changes and some scaling, though Im not so sure your current start up tables are at optimal values to begin with so you might have some trial and error to do in getting that table sorted. If you are worried about flooding, you might change those open and closed throttle multiplier tables as well, especially given how different the hell cat ones are. Currently you are flooding yourself at start up with those multiplier tables, particularly right as your car is starting. These tables allow the amount of start up to decrease as your rpms climb just before and at start up. You dont need the same amount of start up fuel at 600-700 rpm as you do when first cranking and at 200 rpms. Setting both of these tables at 1.00 in all cells keeps start up fueling at the initial start up injector pulse width throughout start up so you are likely seeing too much fuel when it starts up. This may not normally be a huge issue but it looks like your start up tables are set too rich already so this may be washing your cylinders over time. Just fyi.