Need Help with HP Tuners on a 2012 Charger R/T 5.7L Texas Speed "Chopacabra" Cam

Hello to everyone,

I am brand new to the HP Academy. My 2012 Charger RT had cylinder 2 intake lifter failure and killed the cam. My thinking was since I have to tear it all down I might as well put in something to get a bit more power and chop out of it and do the MDS delete. I have ben struggling with the tuning this thing.

My background is I am 48 years and did most of my own repairs since I had my 1st car (1986 Charger 2.2). In 2020 I enrolled to a technician program and after graduation trained in Jacksonville with Mercedes Benz Drive and then a technician position at a MB dealer. I have had some HP Tuner training but never any Mopars. I have watched a lot of videos online and have tried several times but it time to seek advice.

I was hoping someone here to take a look at my cam card and stock tune and help me get this running right. The cam is the only upgrade, stock fuel injectors, stock springs/heads, stock torque converter.

Goals for the tune is daily driver, commute to work, I would like to tune for MPG in cruising rpm but want to have plenty of power (giddy up) when I put my foot into it. As for the chop in the idle I did need it super choppy but I definitely want some chop.

Hi John, thought I would reply, but with a question...... are you doing your tuning with a Chassis Dyno, or via the road and the HP Tuner Scanner ??

I am road tuning with HP scanner.

Ok, a dyno-based tune with scanner road check later would be best of course.

But, just using the scanner is fine, only issue there though, is that you are will not be able to build your maps to best HP/Torque through the different throttle/RPM zones. You will be basing everything off the AF readings and your butt.

I gather you have already completed the cam swap?

If so, have you tried anything yet with regards to changes within the ECU?

Have you logged a decent run with everything standard (as in the tune) and whatever mods you are doing, to get a good base line for a start point? Hopefully you have a good compatible AFR logger that works well with the HPT Scanner, and try and fill in as many zones as you can, as well as logging cold starts and hot starts.

That will help with formulating a plan of changes that "may" be needed. You may find the WOT readings are fine with the new cam, and to be honest, the WOT is easy to do. It is the light/medium TP that will take time.

What is the specs of the cam?