2003 Dakota 4.7 L V8 with Automatic Tranny
Reviewed By Duane C (KIRKLAND, WA) Reviewed for a
—8/18/2016 1:11 AM
MPG- loss 13 down to 12.7 with new large MagnaFlow muffler. I did have a manifold leak at the time. IDK if that matters. I think MPG will improve when I get a tune-up and install an in-line performance module. I may need a more efficient fuel pump or injectors, we'll see. Performance- Nice little HP and torque boost, probably close to "as advertised". RPMs- more of em' & higher faster & more freely. Fewer RPMs at cruising speed. RPMs stay lower longer with a light foot. Shifts like a kitten.