if it was me I would disconnect the battery and and pay the 1000 bucks to ship it to one of the expert tuners from this site like, Barth
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Killed my HC - looking for advice - worst case scenario
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Thank you sir! Greatly appreciated as I think starting the diagnostic part of this process is all I can do right now. I seem to figure my way through most situations and so my life as an engine problem finder begins. I was advised by more than one mechanic to do what I could in the way of trying to determine at least where the problem exists if not even trying ti figure out what happened. If I begin that process I will take pics of everything and post. I have a record of everything I’ve ever done to this car in pics and video, ill post whatever if anyone seems interested. Thank you again.Here's a great article on how to change your plugs.
Here's a borescope available on Amazon. Yes, there are cheaper ones, but this one will actually fit in the spark plug hole (after my edit!).
Interesting thing on these dan1546 is that they can have two active fuel maps in the same tune, and can switch between them. Kinda unusual...I never ran into that on the GM LS motors or the Fords, but that's a thing here. Speedy has some good videos walking through the inners of the Hellcat tune if interested. Just search for them here on the forum.
Now, are they a good idea? Seems to work for plenty of folks, especially 93 octane / E85, BUT the tune won't magically make the injectors flow more fuel than they are physically capable of flowing...so ya gotta know what you're doing to make it work! You don't want to be your tuner's first Hellcat engine if at all possible.
3XBlackCHC - You can post the files to a Google Drive or Microsoft OneDrive account, and then use the link function (7th button in from the left on the tool bar) to point to them. Just be sure to set the sharing to what you want on Drive / OneDrive or it won't work.
Thank you I will try that as soon as I get back to HQ3XBlackCHC - You can post the files to a Google Drive or Microsoft OneDrive account, and then use the link function (7th button in from the left on the tool bar) to point to them. Just be sure to set the sharing to what you want on Drive / OneDrive or it won't work.
OK - Just took a quick rip through your log files with the Diabolosport reader (available here for anyone following along with the story so far). FAIR WARNING: I AM NOT A DIABOLOSPORT EXPERT but I have looked at my fair share of log files in other software. Take what follows with that big spoon full of salt please!
Problem #1 that I see is that there is NO AFR or Lamda measurement in any of the files, and nothing that looks like an aux O2 sensor either. That means whoever was tuning this was looking only at knock retard, injector pulse width, and MAP to do your tuning. That ain't good in my book. Sloppy at best, terminal at worst.
Problem #2 that I see is that it looks like your injector pulse width is maxing out in places. In the file 20475_01wot_0.log, it bounces off 100% at 0:16 into the file. In the file 20475_01wot2.log, it bounces off 100% at 0:12 into the file. In both files, there's substantial periods above 95% duty cycle, which is not best practice. In the file 20475_0160mph.log, the scales are reversed (maybe?) but it appears the injectors are again maxed out between 1:30 and 1:33.
So first blush - and please have someone with more Diabolosport experience than me chime in here because I could be wrong - the engine went lean because it ran out of injector flow rate. Add to that a heavy footed run to the track and some full WOT runs, and nothing good was destined to happen.
Worst case - per the original title of your post - there's a dead piston / burnt valve somewhere. BUT - best case, you chucked one or more plugs running lean and fixing that may bring it back around. It's work if that's the case, but not cubic dollars.
Either way if I'm right about reading these logs, you're going to want to get new plugs in there. If as you pull them all the electrodes are still in place, then sorry for wasting your time - but that's my first guess based on what I see here.
Good luck! - Keep posting as needed.
Problem #1 that I see is that there is NO AFR or Lamda measurement in any of the files, and nothing that looks like an aux O2 sensor either. That means whoever was tuning this was looking only at knock retard, injector pulse width, and MAP to do your tuning. That ain't good in my book. Sloppy at best, terminal at worst.
Problem #2 that I see is that it looks like your injector pulse width is maxing out in places. In the file 20475_01wot_0.log, it bounces off 100% at 0:16 into the file. In the file 20475_01wot2.log, it bounces off 100% at 0:12 into the file. In both files, there's substantial periods above 95% duty cycle, which is not best practice. In the file 20475_0160mph.log, the scales are reversed (maybe?) but it appears the injectors are again maxed out between 1:30 and 1:33.
So first blush - and please have someone with more Diabolosport experience than me chime in here because I could be wrong - the engine went lean because it ran out of injector flow rate. Add to that a heavy footed run to the track and some full WOT runs, and nothing good was destined to happen.
Worst case - per the original title of your post - there's a dead piston / burnt valve somewhere. BUT - best case, you chucked one or more plugs running lean and fixing that may bring it back around. It's work if that's the case, but not cubic dollars.
Either way if I'm right about reading these logs, you're going to want to get new plugs in there. If as you pull them all the electrodes are still in place, then sorry for wasting your time - but that's my first guess based on what I see here.
Good luck! - Keep posting as needed.
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