Superchips 3865 Flashpaq. Maybe it will squeeze +/-10% out of the ole gray mare.

 

Maybe 5%. For the HEMI it only makes about 17hp more I believe. I don't remember if the 4.7 got more though

 

I'm sure it will be minimal but I'm really looking for the trans tune more than anything else. During my research, I felt like what I heard most was that the 4.7 responded to the Flashpaq pretty well compared to the 5.7 but I could be wrong. I'm also looking into the Volant CAI setup.

 

I've heard that too. Apparently the factory detunes the 4.7s pretty hard

 

We shall see!

 

21.9 HP @ 5900 RPM on 91 octane tune. No trans tune option on 03 though if I'm not mistaken.

 

It does more for the 4.7 than the 5.7

 

https://www.superchips.com/Store/tab...q/Default.aspx

Scroll to bottom for what's supported and what's not for your 03 4.7

 

No torque management for you either

 

Just had a SI/DO Flowmaster 40 series installed with turn-downs tucked up under the rear of the bed corners.