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If* it's a stock 6.4 cam then your fine, but you need to know what cam you have exactly...the problem lies in the cam profile and what it was designed for. Unfortunately, not everyone thinks about...

Thanks! I seem to be getting a hold of this much better now...

If anyone has input on the cold start that would be great, I got it to start and for the most part, idle smoother. Still not...

to clarify...5.7 motor with the 6.4 cam correct?
Whats the part number for the cam, they made 2 that im aware of...one for the MDS version and the other for the Manual vehicles that cant run MDS

bump...would love feedback on this. :D

Wanted to update this post, been awhile since I touched the car, it has been sitting as I'm busy these upcoming months. But I have gotten the injector data loaded, made some initial adjustments to...

Thank you, seriously this helps alot. Ill have time here in the next week to do some work on this so hopefully ill update you again. Thank you!

Your fuel trims look way off to me, if you watch them, they jump around too much and rather large amounts. Personally, I would work on smoothing out fueling within 5% on each bank then see if your...

Refer to the original message please, I'm trying to resolve issues we are facing and learn. If I wanted easy, I wouldn't be doing this, I would pay someone. I'd appreciate input to my original...

How does the engine sound at idle? Smooth, rough, any loud noises? I see that Bank 1 knock sensor is higher than bank 2 but both seem way too high for low rpms, mine could be different. I also see...

Not running ethanol, or any other fuels. 93 pump gas

Updated post with tune and vcm files to better view log

I attached the tune file, along with the vcm scanner layout files so the log pulls up properly. The Idle spark sits around 6-8 normally. I actually don't know where idle spark is being "adjusted"...

I have a rather annoying few issues I'm currently trying to resolve, the car is a 2013 Challenger RT, with a 6.4 Engine, comp cams stage 3 cam, headers, built transmission, Hellcat stock injectors,...

post a log and tune if you can...I had that issue when I put the larger injectors in

So I have been chasing a few weird issues and can't seem to resolve this. I have a startup issue where when its a cold start it starts fine, warm start it either starts and seems to need to catch up...

Hi, recently Ive noticed that the VCM editor no longer has the option to disable or enable oxygen sensors. I tune my Challenger and i have already shutoff the sensors previously but this time its...

Hi all, so I need some help asap, I have a 2013 Challenger RT with the NAG1 transmission. I swapped a 6.4 over and noticed some shifting issues occasionally now. I ordered a new transmission...

If you have any current codes, that you know are related to the swap, remove them from appearing again. Also, if you have a compare file make sure all settings match and are correct to before the...

It should be the same concept, you would need a Deceleration LOG and I could probably make happen.

Have you tried to perform a throttle relearn procedure from VCM scanner? there is no reason the tune would change enough, or at all when updating.

RPM limits need changed in both Engine, and Transmission.

Engine RPM limits should be in Fuel - Cutoff/DFCO I highly suggest putting the cutoff limit (forced fuel cutoff) 100 RPM above your...

The Negative numbers in the first three rows are most likely what you thought, decel / off throttle "pops", done incorrectly but It wont affect any sort of rev hanging. AS for fueling, change in the...

Also correct the fueling around that area. it could also be hanging if the fueling is trying to adjust, just a thought :)

Makes Sense! awesome explanation too, might help explain why my drop to idle tries to die sometimes...hmmm...

Ahh, so more airflow in that section means it will be closed more? how does that work, still learning. :D