Thanks for the input, I'll definitely check out COT. I hadn't considered that possibility since both commanded AFR and timing are changing when this happens.
Type: Posts; User: guru1oftal
Thanks for the input, I'll definitely check out COT. I hadn't considered that possibility since both commanded AFR and timing are changing when this happens.
I am data logging a stock 2017 5.7 Ram and noticed that it goes into open loop/Accel every time RPM reaches 4,300 even though the pedal is a volt below the PE threshold (2.5V or 50%) and coolant...
If you post your stock file I'm sure someone will be willing to help out.
The Diablosport tuners can't unlock the PCM either. PCM has to be sent off to be unlocked or you buy one that already is.
If you have around 100k miles and stock cam/lifters it could be the early stages of a failed tappet/worn camshaft.
Most of the ones I am aware of didn't have a noticeable miss early on but would set...
I'm not sure that this is something that can be overcome. The cam phasers use oil pressure and my guess is that oil pressure at idle isn't enough to bring them off their default position.
What is the converter stall speed?
If you are seeing 12:1 on the wideband and no STKR I'd say you are good.
I like to run around 11.9:1 under high load for a safety margin due to the additional weight
Glad that took care of it for you.
The short answer is that it is supposed to establish the amount of timing retard available to torque management.
I just noticed that your PE table seems a bit...
If I remember correctly the intake was set at 109 degrees until around 4,000 rpm at which point it transitioned to 112 degrees.
Engine > Torque Management > Engine > Desired Spark Retard
They have you adjust this but I have found that it results in a surging idle.
There's really no reason to adjust that anyhow.
Rams seem to run this as well in my experience. I assumed that the additional fuel provides a safety margin.
If it left the factory that way I would say that passing emissions shouldn't be an issue.
They had a course for tuning the Hellcats but I don't see it anymore. I think the Beginners course was a prerequisite.
Personally I found the Beginners course to be pretty useless, it is more of a...
Wow that's odd, they worked on my Ram so I assumed they would work for you.
I'll be curious to hear what you find out. Nuts that they don't kill the clutch from the factory if you ask me.
Glad to hear you got it sorted out! I have seen quite a few tunes with way too much timing.
Just fixing that should make a nice improvement at the track.
I'm still learning myself but hopefully this helps a bit.
Engine>Fuel>General>FA Stoich = .0694 (1 divided by .0694 = 14.4) This is your base fuel setpoint
Engine>Fuel>Power Enrich>Pratio = .0125...
Did that fix it for you? Rams don't kill the compressor for acceleration either in my experience.
Here are the settings for a stock 16 Challenger Scatpack.
RPM = 0
SPEED MAX = 255
SPEED MIN = 0
MAX THROTTLE = 3,098
MINIMUM TIME = 20.0
RESET TIME = 0
If you log STKR at WOT you should be able to take the results and apply them to your WOT base table (paste special subtract).
If that doesn't make a huge dent in the measured STKR I would be...
That does seem like a lot of timing. It is richer than I would run it but I would expect that to help with the STKR.
What happens to STKR if timing is backed down 4 degrees?
Try running the attached graph layout to monitor ST knock at WOT and PT.
I have scaled them to match your spark tables so you can copy and paste (subtract) into your tune directly.
Once you get it...
There isn't a lot out there on shift point tuning but I have mine pretty well sorted out.
What exactly are you wanting to do, higher RPM upshift, easier downshift, all of the above?
This mirrors my view of the beginners book. I would add that following their instructions on a late model Ram 5.7 resulted in a lot of pinging and coverage of how to datalog KR after they have you...
The stock injectors are more than capable of fueling a full bolt-on Hemi.