I have a 2015 Grand Cherokee Overland V8 4x4. I have 2 MagnaFlow Super 44s, Volant CA I, and the throttle body brings it all together. Acceleration is more linear and progressive, and takes off much quicker, even in Eco mode! I'm giving it some time before I test Sport mode, as I'm scared I'll get too addicted! This is my 2nd TB from Moe's, and won't be my last purchase!