Hi guys, I'm new to this platform and I've got a fairly unique build that I'm trying to get started that I'm hoping you will be able to give me some pointers on.
The build:
2005 Dodge Magnum with a 2015 Hemi 5.7 engine equipped with a 6.4 camshaft.
Has an Eaton M112 supercharger and a VS racing turbocharger
Hellcat injectors, Deatschwerks 400lph fuel pump with adjustable regulator fuel pressure is set to 58psi
Factory electronic throttle body, the bypass valve is hooked up and working on the supercharger
Not using the factory O2 sensors at all.
SRT caliber 3 bar MAP sensor
I'm at 4250ft elevation
I've got an AEM wideband with gauge, but I don't currently have it wired into the scanner for recording
The issue: The vehicle fires immediately, runs for about two seconds and then stalls. I've changed a bunch of different stuff but I'm basically fumbling around in the dark here, if you have any ideas I'd love to hear them. By looking at the logs it seems like the injectors get a big pulse on startup, but as soon as the vehicle fires they almost turn off completely, then right when the vehicle stalls they pulse again?
No matter what I change the vehicle does not seem to keep firing the injectors after startup. Occasionally if I disconnect the MAP sensor the vehicle will be able to keep itself running, but just barely.
Here is the current tune and log:
Magnum PI base start tune 8-6-23.hpt
start attempts 8-6-23.hpl
Any advice would be appreicated, even if just to tell me to do more research!
If you'd like to see the full build, check out the Poor Man's Hellcat playlist on my youtube channel:
https://www.youtube.com/channel/UCp-...vsrPLCZf9VtOrw