So i was wondering if anyone is running any kind of tuner on there new 16 plug 4.7 i just got a smokin deal on one for a work truck the engine out the box is a dog so i was thinkn 4.10s and a tuner would wake it up and all the chip companies say 40 hp to the wheels that sounds alil crazy anyone have one to vouch for that ??

 

I would say that 20 to 25rwhp is a realistic gain. I can feel in in my 08 Hemi for sure.
What size tires do you have? If 275/60r20, I would go 4.56.
What gears do you have now?